What is formed when the number of electrons is changed?
Question 1 options:
ion
radioisotope
isotope
a new element
Answer:
ions.....................
Answer:
ions? t.b.h i have no idea
helppp this easyyyyyyyyyyyyyy
Answer:
Circulatory System -
Nervous System
Respiratory System
muscular system
Find the average kinetic energy of the molecules shown in the sample above. ( C and D are wrong )
a. 5
b. 4
c. 3
d. 36
Answer: B
Explanation:
I need help with these questions from 8th Grade science, Specifically Chemistry.
Answers should be detailed, 3-4 sentences.
List at least 3 different physical properties or changes of a substance.
List at least 3 different chemical properties or changes that a substance can experience.
EXPLAIN YOUR ANSWER! NO LINKS! PLEASE DON"T ANSWER JUST TO GET POINTS!
I will report your answer if you do any of those things.
Thx in advance!
Answer:
Physical properties of a substance can include color, temperature, and mass. These are physical properties because they can be measured without changing a substance's chemical identity. Chemical properties of a substance can include flammability, acidity, and reactivity. These are chemical properties because they can be measured only by changing a substance's chemical identity.
what are u?
for example, I'm an extra fluffy fat cat marshmallow fluffy ball unicorn duck butterfly frog pony
wbu what are u?
Answer:
i am ur daddy
Explanation:
Answer:
IM ELMO IMA FREAK IMA ELMO
HAPPY 50 YEARS OF SUNNY DAYS BAAAA
Explanation:
Short Question: What is Hydropower?
Answer:
Hydropower is energy in moving water.
Explanation:
What is the function of tunnels and passageways in subsurface mining?
a. to reach mineral ore deep below the surface of the earth
b. to reach mineral ores on the surface of the earth
c. to drain underground lakes where minerals are found
d. to create strip mines and quarries below the surface of the earth
Answer: to reach mineral ores on the surface of earth
Explanation:
The main function of the respiratory system is to –
A. filter body fluids to remove waste products from the bloodstream.
B. send signals in the form of hormones to the body to control growth, reproduction, and metabolism.
C. rapidly communicate specific information using electrical impulses.
D. exchange gases, mostly carbon dioxide and oxygen, between the body and the atmosphere.
If the last three animals of a species are all females, what will happen to the species?
A
The species population will slowly grow +
B
The species will become extinct because it takes a male and a female to reproduce -
C
The species will not change /
In an ecosystem, if the last three animals of a species are all females, the species will become extinct because it takes a male and a female to reproduce .
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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In the process of precipitation, liquid water changes into water vapor and enters the atmosphere.
True or False?
:p
Answer:
true
Explanation:
What did you observe happening in the cups?
Did a phase change or phase changes occur? If so, which one or ones?
How does weathering and erosion contribute to the cycling of earth's materials? (specifically rock/the geophere)
Answer:
Erosion breaks rocks down further and then moves them.
I will mark brainlist for best answer!
Write a full paragraph about:
What causes changes in ecosystems?
Factors that change the ecosystems are called drivers.
There are direct and indirect drivers.
Direct drivers straightforwardly influence ecosystem process.
Indirect drivers operate more diffusely, By altering one or more direct drivers.
Some direct drivers:
Habitat change Climate change Pollution Invasive speciesOverexploitationSome indirect drivers:
Population change Change in economic activity Sociopolitical factorsCultural factors Technological changesThe equator is at a latitude of 0°. Which latitude will have the warmest temperature?
A. 15°N
B. 20°S
C. 45°N
D. 70°S
Species acquire many of their unique characteristics through
A. Homologous structures
B. Homeostasis
C. Pangaea
D. Variation
right answers only will be reported if not right and no lniks!!!!!!!!!!!!!!!!!
Answer:
The answer is D
Explanation:
fish endangered: 15.1
fish threatened: 6.6
More fish are endangered than threatened
Adjustment to environmental conditions is known as
A. Adaptation
B. Darwinism
C. Evolution
D. Natural Selection
Answer:
A.
Explanation:
Adjust = Adapt if that makes sense.
Please Help
Compare Earth 4 billion years ago to Earth 550 million years ago.
Which of these is least likely to show common ancestry?
A. homologous structures
B. analogous structures
C. DNA
D. vestigial structures
I need help please j
a six word story of evolutions. (six words not six letters)
The equator is at a latitude of 0°. Which latitude will have the warmest temperature?
Answer:
There is a relationship between latitude and temperature around the world, as temperatures are typically warmer approaching the Equator and cooler approaching the Poles. There are variations, though, as other factors such as elevation, ocean currents, and precipitation affect climate patterns.
Explanation:
I´ll mark branlist for the best answer!!!
Write a paragraph (5-8 complete sentences) answering the prompt＂How does the availability of resources in ecosystems impact ecosystems?＂
5-8 Sentences on: "How Does The Availability Of Resources In Ecosystems Impact Ecosystems?"
Changing out natural resources in our environment can affect the whole entire ecosystem. Ecosystems can change throughout time but the change may or may not affect the ecosystems. But according to research, if the change is too fast the whole ecosystem can be destroyed. An imbalanced or damaged ecosystem can lead to problems. Certain resources play an important role such as sunlight and water, we need resources to survive and can also help living creatures. These resources impact animals, plants, and insects/bugs.
P.S If you need more sentences I will edit my answer!
Hope this helps!
~Hocus Pocus
The following table shows the distance from the sun of some unknown planets of equal mass.
W 1.5 AU
X 0.723 AU
Which of the following best explains which planet revolves at a faster speed?
A.) Planet X, because the sun pulls it with a greater force.
B.) Planet W, because the sun pulls it with a greater force.
C.) Planet W, because the gravitational force is weakened by distance.
D.) Planet X, because the gravitational force is strengthened by distance.
Answer:
Option D.) Planet X, because the gravitational force is strengthened by distance.
Explanation:
As we know from Kepler's law , the planets that are closer to the sun move at a faster rate in comparison to those planets that are far because of high gravitational force.
According to the question,
both planets have equal mass. Plant W is at 1.5 AU and planet X is at 0.723 AU distance from the sun.
So, planet X revolves at a faster speed because it's shorter distance from the sum as comparison to planet W, strengthened the gravitational field.
Thus, Option D is the correct answer.
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Please help me with this science question
Which of the following has the greatest influence on the size and force of waves?
A.
seasons
B.
Moon’s gravity
C.
wind speed
D.
Earth’s gravity
Describe what bacteria are - their parts, how they can be good, how they can be bad, and the different types.
I hope that was enough to answer your question!!!
Have a good day and I hope you pass all of your exams!!!!! <315 points?
Extinction of a species is most likely to NOT occur in which example?
A. the organism is larger and stronger than others in it's environment
B. the organism is smaller and smarter than others in its environment
C. the organism is larger and smarter than others in it's environment
D. the organism is able to survive and reproduce more than others in it's environment
Answer:
D. the organism is able to survive and reproduce more than others in it's environment
Explanation:
It will only go extinct if it can't survive or reproduce.
1. What are characteristics and examples of bryophytes?
2. What are characteristics and examples of protists?
Answer:
characteristics of bryophytes:
1) the plant body is gametophyte
2) the plants are green and possess chloroplasts
3) he plant body lacks true roots,stem or leaves
4) vascular tissue are completely absent
examples: liverworts, the hornworts, mosses
characteristics of protists:
1) some are multicellular, most are unicellular
2) some are autotrophic, some are heterotrophic
3) they have a nuclear and membrane bound organelles
4) they can be parasites
examples: algae, amoeba, euglena
Explanation:
A student uses a lever and fulcrum to lift a rock off the ground.
Which option describes when potential energy is converted into kinetic energy during this process?
a. when the lever is wedged beneath the rock but before it has been lifted
b. when the student presses down on one side of the lever to cause it to move
c. when the rock rests on the ground without the lever
d. when the rock rests above the ground