Answer:
The amount of moisture air can hold is dependent on its temperature and pressure. The warmer the air the greater the quantity of water vapour it can contain. The air temperature is measured with a normal thermometer this is the Dry-Bulb reading. The actual amount of moisture known as the mixing ratio is measured in grams of water per kilogram of dry air. When air at a certain temperature is saturated it cannot hold any more moisture. The relative humidity of the air is the ratio of the actual amount of moisture in the air to the fully saturated amount.
We can use evaporation to measure the amount of moisture in the air. A wet cloth is placed over the bulb of a thermometer and then air is blown over the cloth causing the water to evaporate. Since evaporation takes up heat, the thermometer will cool to a lower temperature than a thermometer with a dry bulb at the same time and place. The depression in Wet-Bulb temperature allows the humidity to be calculated. If the air is fully saturated (100% relative humidity) the water cannot evaporate, so both the wet and dry bulb temperatures are the same. If the dry and wet bulb temperatures are set to the same value the calculator will show the saturation mixing ratio the amount of water in saturated air at that temperature.
If partly saturated air is cooled without changing its pressure or amount of water vapour, a point is reached when it becomes saturated. The moisture will be given up as dew or ice crystals. This temperature is the Dew Point. This is why condensation will form on a bottle of cold beer, as the air in the vicinity of the bottle is cooled below its dew point. Meteorological reports usually quote the temperature and dew point as well as the station pressure. Moisture content and relative humidity can be calculated from these figures.
The Psychrometer is the name of a device containing both a wet and dry bulb thermometer. This can be a fixed device for meteorology or a handheld sling psychrometer that is often used in air conditioning applications.
Explanation:
The relative humidity if the dry-bulb temperature is 26°C and the wet-bulb temperature is 18°C is 45.1%.
Psychrometer:
It is a device that use to calculate the relative humidity and dew. It has two thermometer, one measures the dry temperature while another measures the wet-temperature.
Given here,
Dry-bulb temperature is 26°C
Wet-bulb temperature is 18°C
The difference between temperature of wet and dry bulb is
= 26 - 18 = 8°C
Now compare the temperature difference to the chart given in the
Therefore, the relative humidity if the dry-bulb temperature is 26°C and the wet-bulb temperature is 18°C is 45.1%.
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Over a period of several decades ecologists conduct an investigation on the survival of a species of lizards
Answer:
To find out the impact of environment on the physical structure of lizard and natural selection.
Explanation:
Ecologists conduct an investigation on the survival of a species of lizards in order to study the impact of environment on the physical body of lizard and natural selection. The ecologists find out that environment has direct impact on the body structure of lizard. Those lizards that spend more time on the ground, have longer legs in order to run fast, while on the other hand, species that lives in the trees usually have shorter legs in order to easily climb on the trees so these body structure helps them in survival and movement.
Explain why zoologist name the bones and muscles of a frog like those of a human.
Answer:
Because they are the same mussles and bones, that serve the same function
Explanation:
Question #14: In which scenario below would natural selection be most successful?
A.) All insects in a certain desert that have the same adaptation for saving water
B.) An island with lizards that all look alike and are all eating the same food
C.) A population of parakeets that have the same size beak
D.) A population of salmon with different skin colors that attract mates.
Answer:
the answer is d
........
Answer:
D) a population of salmon with different skin colors that attract mates
In 1989, a tanker carrying oil struck a reef and spilled 11 million gallons of oil in an
Alaskan bay. The oil not only spilled into the harbor, but also washed up on the
shoreline. The spill killed millions of fish, birds that lived on the shore, sea otters,
porpoises, seal lions and many whales. Every form of life in the area was affected.
Scientists have carefully studied the area and its species since the initial spill to
determine both short-term and long-term effects.
Which of the following was affected the least by this catastrophic event? A: Plants along the shoreline B: Fishermen in the area C: Migratory sea birds D: Crustaceans that lived on the bottom of the bay
Answer:
The answer is C: Migratory sea birds.
Explanation:
Sea birds that are migrating would not only just fly above the spill and nestle on the trees, but they could eat crabs and other animals that scurry around on the shore as a food source due to the death of their primary source of food, fish.
a black chicken and a white chicken are crossed. what is the probability of.
Answer:
25% that they would have a black chick
Explanation:
50% of the offspring have genotype BW, 25% are BB and 25% are WW. This means that 50% of the offspring are erminette, 25% are black, and 25% are white.
Hope this helps!!
Which of the following provides the foundation for life on earth?
solar energy
nuclear energy
natural resources
renewable resources
Answer:
The correct answer would be - solar energy.
Explanation:
Solar energy or the light energy that comes from the sun is one of the major sources of energy for all living forms directly or indirectly. There would be no life without solar energy on earth.
Solar energy is responsible for the food and energy of each and every living organism. Plants produce their food with the help of sunlight or solar energy and the rest of the other organisms depend on this food for their food and energy.
Offspring of certain fruit flies may have yellow or ebony bodies and normal wings or short wings. Genetic theory predicts that these traits will appear in the ratio 9:3:3:1 (9 yellow, normal: 3 yellow, short: 3 ebony, normal: 1 ebony, short). A researcher checks 100 randomly selected fruit flies and finds the distribution of the traits to be 59, 20, 11, and 10, respectively. Are the results this researcher observed consistent with the theoretical distribution predicted by the genetic model
Answer:
Yes, the observed results are consistent with the theoretical distribution predicted by the genetic model. The population is in equilibrium.
Explanation:
Available data:
Offspring of fruit flies may have yellow or ebony bodies and normal wings or short wings.Expected phenotypic ratio 9:3:3:19 yellow, normal: 3 yellow, short: 3 ebony, normal: 1 ebony, shortSample size , N = 100Phenotypic distribution 59:20:11:10To know if these results are consistent with the expected ones, we need to develop a chi-square analysis. To do it we need the following information
Chi square= ∑ ((Obs-Exp)²/Exp)- ∑ is the sum of the terms
- Obs are the Observed individuals
- Exp are the Expected individuals
Freedom degrees = K – 1- K =genotypes number = 4
Significance level, 5% = 0.05 Table value = Critical value
First, define the hypothesis:
Hypothesis: The allele of this population will assort independently. The population is in equilibrium
H₀= Individuals will be equally distributed.
H₁ = Individuals will not be equally distributed.
Second, we need to get the expected number of individuals with each phenotype. To do it, we will use the expected phenotypic ratio and the total number of individuals in the sample. We can just perform a three simple rule, as follows:
16 ------------------------------------ 100 individuals in the sample ------- 100%
9 yellow, normal ---------------- X = 56.25 individuals -------------------56.25%
3 yellow, short ------------------- X = 18.75 individuals --------------------18.75%
3 ebony, normal -----------------X = 18.75 individuals ---------------------18.75%
1 ebony, short ---------------------X = 6.25 individuals ----------------------6.25%
Now that we know the expected numbers of individuals with each genotype, we can compare them with the observed ones.
yellow, normal yellow, short ebony, normal ebony, short
Expected 56.25 18.75 18.75 6.25
Observed 59 20 11 10
The chi-square value = Σ(Obs-Exp)²/Exp.
So now we need to calculate (Obs-Exp)²/Exp
yellow, normal(Obs-Exp)²/Exp = (59-56.25)²/56.25 = 0.134
yellow, short(Obs-Exp)²/Exp = (20 - 18.75)²/18.75 = 0.083
ebony, normal(Obs-Exp)²/Exp = (11 - 18.75 )²/18.75 = 3.203
ebony, short(Obs-Exp)²/Exp = (10 - 6.25)²/6.25 = 2.25
X² = Σ(Obs-Exp)²/Exp = 0.134 + 0.083 + 3.203 + 2.25 = 5.67
X² = 5.67Significance level = 0.05Degrees of freedom = genotypes number - one = 4 - 1 = 3Critical value or table value = 9.348P₀.₀₅ > X2
9.348 > 5.67
There is not enough evidence to reject the null hypothesis. The genotypes might be in equilibrium, and there might be an independent assortment.
Which molecule is produced in the aerobic breakdown of a glucose molecule?
A. Water
B. Oxygen
C. Light
D. Alcohol
E. NADPH
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E. NADPH
thankshope it helpspls mark as brainliestAnswer:
E
Explanation:
it enters the citric acid cycle and generates reducing equivalents in the form of NADPH
In these chemical equations, each letter represents a different element.
Which equation is balanced?
A. 2EF + 3G2H
3GF + E2H3
B. 2EF3 + 3G2H → GF + E2H3
C. EF + G2H + EH + 2GF
D. 3E2F+G2H3 + 3EH + G2F3
Answer: B. 2EF3 + 3G2H → 6GF + E2H3
Explanation:
In these chemical equations, each letter represents a different element the correct equation is B. 2EF3 + 3G2H → GF + E2H3.
What is the balanced equation?A balanced equation is an equation for a chemical response wherein the wide variety of atoms for every detail withinside the response and the overall fee is the identical for each the reactants and the products. In different words, the mass and the fee are balanced on each aspects of the response.
Here this equation is balance 2EF3 + 3G2H → GF + E2H3 as all are balanced.
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Explain how depth of the ocean determines ocean topography.
Answer:
Currents and waves
Explanation:
Depending on the way that the currents are and the way the wind moves. This factor can change the way the graph determines depth.
what type of organism is missing from the food web in question #8
Answer:
Algae
Explanation:
Las margaritas se cierran durante la noche y se abren al amanecer. Durante los inviernos fríos, algunos animales hibernan, a la espera de las estaciones mas cálidas, cuando abunda el alimento. Cuando sentimos frio se nos pone “la piel de gallina” y tiritamos, en cambio si hace calor, nos da sed y bebemos agua ¿Qué tienen en común estas situaciones?
Please Help I willl mark Brainlist Please
Answer:
4 I think
Explanation:
The cytoplasm is home to many activities of the cell as it contains molecules, enzymes that are crucial in the break down of the waste. The cytoplasm also assists in metabolic activities. Cytoplasm provides shape to the cell. It fills up the cells thus enabling the organelles to remain in their position.
The series of membrane-bound channels between the nuclear and
cell membranes, serving as a cellular transport system is the
o plasma membrane
O nucleus
o endoplasmic reticulum
Answer:
C. Endoplasmic Reticulum.
Explanation:
The Endoplasmic Reticulum also includes ribosomes attached to the membrane and can produce protein.
I hope this helps you! :)
Some male peakcocks used to have bright and large tails while others had dull, smaller tails. Female peacocks will only mate with the ones that have the brightest and largest tails. Explain how this would impact the offspring of male peacocks over time.
Answer:
Over time, most males will have bright and large tails. Females only mate with males carrying these traits, and so natural selection will favor them.
Explanation:
Bright and large tails are traits that reflect the genetic quality of males. So individuals with the most vibrant color and length express better capabilities of finding food, competing for resources, competing for males, among others, are the best option to mate and to ensure successful offspring.
The brightest and largest tails are, the better chances males have to mate and pass their genes to the following generations. So the organism spends energy and resources to produce more vibrant colors and longer feathers to enhance mating chances.
Females must ensure their reproductive success, so sexual selection is the pressure modeling males in this species. Females will only choose individuals with the better genetic charge to mate -individuals with brightest and largest tails-, so their progeny can have better genes and higher survival probabilities.
Males with the brightest and largest tails will mate and reproduce. They will pass their genes to their progeny. Male offspring will also have bright and large tails because they inherit these conditions from their parental. These male offspring will also pass their genes to the progeny, and so on. The frequency of the alleles that express these traits will increase in the population. Natural selection is favoring these alleles. So over time, there will be much more individuals with bright and large tails than individuals with dull and small tails.
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What adaptation of cactus helps it store water?
A) Large leaves
B) Red fruit
C) Strong roots
D) Thick stem
Answer:
D. Thick Stem
Explanation:
List the possible phenotypes for rat eye color.
Compare and contrast the frog's external anatomy with that of a mammal. State design advantages is has for its lifestyle.
Answer:
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Human body has muscular partition called as diaphragm to separate abdomen by chest frog lacks it.Explanation:
Frogs do not have outer ear which mammals have.
Frog is an amphibian
Integumentary system to protect skin from external environment., mammals have glandular skin.
skin to inhabit water habitat skin has glands, hair, mammary gland and fur
Frogs have two forelimbs and two hind limbs. mammals have 4 forelimbs.
presence of cloaca for waste, sperm and egg release while mammals have anus, urethra and genital openings for the purpose.
ADVANTAGES OF EXTERNAL FEATURES IN LIFESTYLE:
The frogs body id designed streamlined for swimming as presence of flat skull, no neck and small waist.
The skin allows exchange of gases and allows them to breathe through skin.
Powerful hind legs assist them in jumps.
they have 3 eyelid membrane that helps them see in water or land.
Elements such as The lungs exchange gas to maintain homeostasis. In the alveoli of the lungs, oxygen and carbon dioxide are exchanged. This exchange occurs between the lungs and blood vessels (capillaries). The transport of oxygen to the blood does not require energy. The membranes of the alveoli are thin and moist and allow gasses to dissolve and be transported to and from the blood. When we breathe, a high concentration of oxygen enters the lungs and moves to the blood. Based on this scenario, is the transport of oxygen a result of osmosis, diffusion, or active transport?
Answer:
oxygen are among the few simple molecules that can cross the cell membrane by diffusion. And Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane. The oxygen molecules move, by diffusion, out of the capillaries and into the body cells. While oxygen moves from the capillaries and into body cells, carbon dioxide moves from the cells into the capillaries.
Explanation:
Answer:
This is Diffusion........... :)
what triggers angry in the brain?
Answer:
amygdala
Explanation:
Answer:
Anger starts with the amygdala stimulating the hypothalamus, much like in the fear response. In addition, parts of the prefrontal cortex may also play a role in anger. People with damage to this area often have trouble controlling their emotions, especially anger and aggression. Epinephrine or adrenalin released by medulla of the adrenal glands, surges at the time of panic and emergency. It provokes stress response and brings out the arousal of extreme emotions like fear, anger or amusement.
Explanation:
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What is the formula for work when power is present?
Answer:
below
Explanation:
Power equals work (J) divided by time (s). The SI unit for power is the watt (W), which equals 1 joule of work per second (J/s)
can someone plzz help me on this its hard:( ill give brainliest
Answer:
B
Explanation:
1. In this environment, which trait is adaptive for the birds?
Answer:
Explanation:
Natural selection
Lab: Natural Selection
Claim Evidence Reasoning - Natural Selection Lab
Active
Prompt
If Mt. Kaboob were to erupt again, what changes might you expect to see in the walking bean population?
Answer:
It would increase.
Explanation:
A carbon footprint is a measure of the amount of carbon human activities, like using energy, release into the atmosphere. Which activity would help decrease the greatest carbon-releasing activity in US homes? limiting time in hot showers wearing layers of clothing turning off lights when leaving a room unplugging electronics when not in use
Answer: unplugging electronics when not in use
Explanation:
Carbon footprint is the measure of the amount of carbon liberated into the atmosphere due to human oriented activities like burning of fossil fuels, deforestation, liberation of toxic gases including carbon monoxide and carbon dioxide into the atmosphere by the factors and automobile vehicles. To stop the carbon releasing activity in US homes one must unplug the electronic not in use because electronics consume a lot of electrical energy every day this electrical energy comes from thermal power plants which typically use coal to harness energy the combustion of the coal liberates carbon dioxide and carbon monoxide in the environment so creating pollution and increases the carbon footprint. Little will be the usage of electricity little will be the burning of coal and it will decrease the carbon footprint.
Answer:oml people just be sayin anything these days the real answer is B
Explanation:
A(n) is the general term for an infectious disease that has spread across a city, region, or country.
Answer:
epidemic
Explanation:
The situation in which a disease spreads over large area or effects a large population of people, the term used to denote is known as epidemic. The disease is caused for a short period of time. The disease is spread rapidly and the outbreak creates a havoc in the region. A particular country or area is infected by the epidemic. Pandemic refers to the spread of disease over many countries and continents. Epidemic when spreads to more countries it is termed as pandemic.
Answer:
Epidemic
Explanation:
What is the main function of leaves?A. Leaves provide support for growth and a place to store food.B. Leaves provide a place for photosynthesis to occur.C. Leaves absorb water and minerals and transport nutrients to the stem.D. Leaves create a barrier that prevents water in the plant's tissues from evaporating
Answer:
B
Explanation:
The main function of a leaf is to produce food for the plant by photosynthesis.
Answer: The correct answer is B. Leaves provide a place for photosynthesis to occur.
Explanation: Confirmed correct.
_______ Which vitamins and minerals must be listed on food labels?
a. vitamin D, vitamin C, iron and magnesium
b. vitamin C, calcium, iron and potassium
c. vitamin C, vitamin A, calcium and iron
located at the top of the trachea, the _____ helps a person speak.
Answer:
It is either the epiglottis or larynx
Explanation:
Plants use energy from sunlight, water, and carbon dioxide to produce sugar. Which structure is found only in plant cells and helps plants capture energy from sunlight?
A. vacuole
B. nucleus
C. chloroplast
D. cell membrane
Answer:
The Answer is C. Chloroplast
Explanation:
Chloroplasts are the organelle of photosynthesis. They capture light energy from the sun and use it with water and carbon dioxide to make food (sugar) for the plant. The arrangement of chloroplasts in a plant's cells can be seen in Figure below.