how does human activity cause disruptions in the ecosystem?

Answer: Chloroplast

Explanation:

In humans, sister chromatids are distinct from one another, although they are identical in animals: Animal spindles lack microfibrils, but the spindles in the spindles contain both microtubules and microfibrils.

A tiny, hollow tube-like structure that can be discovered in the cytoplasm of both plant and animal cells. The form of a cell is supported in part by microtubules. Animal cells have cytoplasmic microtubules that resemble the mitotic spindle fibres and are linked to centriole satellites. The existence of these proteins and their potential contribution to cell shape maintenance are examined. Spindle fibres protrude from the centrioles in animal cells. However, spindle fibres arise from the cell's centrosome area in plant cells, which do not have centrioles.

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The factors that affect genetic variation are genetic mutations, gene flow, genetic drift and random mating.

Genetic variations are the changes in the genetic sequence of the DNA. These genetic variations are important as they allow the living beings to evolve and survive. There are certain factors which affect genetic variation and they are genetic mutations, gene flow, genetic drift and random mating.

A genetic mutation is basically a change in the DNA sequence of a  particular gene which causes a different product to form. It is able to create a permanent change to that particular gene's DNA sequence. Gene flow can be defined as the movement of genes in and out of a specific population. Genetic drift is the change in allelic frequency by chance. Random mating is the mating of individuals which is not dictated by any social or genetic preference.

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Answer: eutrophication normally leads to shortage of oxygen supply thus there is an increase in competition between marine organisms for oxygen.

Explanation:

Answer:

Plant cells have a cell membrane and a cell wall Animal cells only have a cell membrane.

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Answer:

O B. Introduce ladybugs to eat the aphids

Explanation:

In crop production, there are certain pests known to categorically affect a particular crop plant. Hence, there are ways devised to tackle this issue of pest attack on crops. One of those ways is the "BIOLOGICAL CONTROL METHOD".

The biological control method involves the use of natural enemies to combat pest organisms. The natural enemies are living organisms that prey on the so called pest organism. This is the case in this question, where a specific aphid is known to infest spinach, peppers, and tomatoes.

The farmer will employ biological control method in stopping these aphids by introducing ladybugs to eat the aphids.

A population exceeding its carrying capacity will suffer a(n) dieback; crash or crash; dieback, unless the excess individuals can switch to new resources or move to a new area.

A population is in overshoot while it exceeds to be had wearing ability. A populace in overshoot might also additionally completely impair the long-time period effective capacity of its habitat, lowering destiny wearing ability. It might also additionally continue to exist quickly however will finally crash because it depletes important herbal capital (useful resource) stocks. Carrying ability may be described as a species' common populace length in a specific habitat. The species populace length is confined through environmental elements like good enough food, shelter, water, and mates. If those wishes aren't met, the populace will lower till the useful resource rebounds.

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Answer: Positive and Negative

Explanation: As these early farmers became better at cultivating food, they may have produced surplus seeds and crops that required storage. This would have both spurred population growth because of more consistent food availability and required a more settled way of life with the need to store seeds and tend crops.

Answer:

grrr science I aint helping LOL! im kidding HERE hope this helllpppsssss! (:

Explanation:

Plants have two major structural systems: the root system and the shoot system. ... The shoot system transports water and nutrients to leaves and flowers. The leaves of the plant are the main location for photosynthesis. Plant reproduction occurs through pollination of the flower and fertilization.

Plants have a root system, a stem or trunk, branches, leaves, and reproductive structures (sometimes flowers, sometimes cones or spores, and so on). Most plants are vascular, which means they have a system of tubules inside them that carry nutrients around the plant.

Unlike animals, however, plants use energy from sunlight to form sugars during photosynthesis. In addition, plant cells have cell walls, plastids, and a large central vacuole: structures that are not found in animal cells. Each of these cellular structures plays a specific role in plant structure and function.

Gravity holds the sun, earth, and moon together, and these three bodies engage in a variety of interactions. Due to the earth's gravitational attraction, the moon revolves the planet. And because of the sun's gravitational attraction, the earth orbits the star.

The Moon travels in tandem with Earth's orbit around the Sun. Despite the Earth's continued motion, the Moon must travel two additional days during its orbit, which lasts 27 1/2 days.

The Moon is 384,403 kilometres away from Earth on average. Additionally, there are 149,597,887 kilometres between the Earth and the Sun on average.

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Crossing over, Independent assortment, and Random fertilization are the three meiotic events that affect genetic variation.

Crossing over: A process known as crossing over occurs when homologous chromosomes couple up and exchange genetic material during prophase I. Genetic variety is the outcome of this, which causes the development of chromosomes with novel gene combinations.

Independent assortment: The chromosomes arrange at random along the cell equator during metaphase I. This indicates that there is an equal likelihood for each pair of homologous chromosomes to be found in either daughter cell. Genetic variety results from the varied chromosomal arrangements in each daughter cell as a result.

Random fertilization: During fertilization, sperm and egg cells combine to form a zygote. Since sperm and egg cells are produced through meiosis, each one carries a unique combination of chromosomes.

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Yes, the Gause’s Principle is accurate and applicable in real life.

This law is also known as Gause's law. One resident will drive off the other one. If any of the life forms of the exhaust population remains, that would be because they have modified themselves according to the dissimilar niches.

Gause's laboratory experiment showed the process of competitive exclusion because he was able to separate the two species /living organisms and their common limiting resource such as food that is present in the laboratory.

Gause's principle of ruthless exclusion states that two species competing for the same restricted resource cannot coexist in the same niche forever. In ecology, the competitive exclusion principle, sometimes mention as Gause's law is a proposition.

So we conclude that The competitive barring principle, which is also known as Gause's law of competitive exclusion.

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Capillary action happens in light of the fact that water is tacky, on account of the powers of attachment (water particles like to remain nearby) and bond (water atoms are drawn in and stick to different substances).

The development of water particles in the plant body is because of the cement powers between the water atoms and surfaces of the root and stems. The durable powers present between the water particles keep them intact and back off their transportation.

Since water particles like to remain together (attachment) and like to adhere to the walls of the containers of cellulose (bond), they ascend the cylinders as far as possible from the roots to the leaves. Water then, at that point, dissipates from the leaves, assisting with drawing up additional water from the roots. This interaction is called hairlike activity.

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Answer:

1. Ribose (type of sugar found in ATP and ADP molecules)

2. The 3 phosphate groups (Energy is stored in the 3 phosphate groups and in order to bring the stored energy to use, the last phosphate bond breaks and energy is released)

3. ATP has a higher energy potential than ADP (This is cuz, ATP has 3 phosphate groups and ADP has 2 phosphate groups)

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The light-independent reactions use stored chemical energy from the light-dependent reactions in order to fix carbondioxide gas and create a product that can be converted into glucose.

Photosynthesis is that kind of process in which green plants and organisms prepare their own food in the presence of sunlight to neutralize the reaction.

The process of photosynthesis takes place in two stages one stage is known as a light-dependent reaction while the other stage is known as a light-independent reaction.

ATP Synthase:

The ATP synthase is also known as a mitochondrial enzyme which is localized inside the inner membrane, where it catalyzes the synthesis of ATP from ADP and phosphate.

Calvin Cycle:

The process of the chemical reaction is performed by the plants for the reduction of carbon dioxide and other compounds into glucose.

Electron Transport Chain:

The electron transport chain is that chain in which a series of four protein complexes couple redox reactions, creating an electrochemical gradient that leads to the creation of ATP in a complete system named oxidative phosphorylation.

Photosystem 1:

In this system, the proteins are responsible for the precise arrangement of cofactors and determining redox properties of the electron transfer centers.

Photosystem 2:

First of all the photosystem 2 precise arrangement of cofactors and determine the redox properties of the electron transfer centers.

So we can conclude that the process of photosynthesis is in which the green plants and organisms prepare their own food in the presence of sunlight and oxygen.

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Answer:

releases energy

Explanation:

Answer:

The cell releases oxygen The cell releases stored energy

Explanation:

During cellular respiration, the mitochondria take in carbon dioxide and purify it back into oxygen. Huamns also have this process, but in a much smaller manner. This process is what gives us oxygen on our planet.

Intravenous injection is the most effective approach for quickly and accurately distributing a certain amount throughout the body. It is also used for irritating solutions that would cause pain and tissue damage if supplied by subcutaneous or intramuscular injection.

Intravenous therapy (IV therapy) is a medical practice that involves injecting fluids, medicines, and nutrients directly into a patient's vein. Intravenous administration is extensively used for rehydration or to provide nutrients to people who are unable or unwilling to swallow food or drink by mouth due to reduced mental states or other causes.

It can also be used to administer medications or other types of medical therapy, such as blood products or electrolytes, to balance electrolytes. Attempts to administer intravenous therapy date back to the 1400s, but the practice did not become widespread until the 1900s, after protocols for safe and successful use were developed.

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Answer:

Matter can be arranged in a variety of ways, including as a solid, liquid, or gas.

We can model the arrangement of matter using the kinetic molecular theory

Explanation:

Matter can be arranged in a variety of ways, including as a solid, liquid, or gas. In a solid, the particles that make up the matter are packed closely together and are not able to move around freely.

In a liquid, the particles are more spread out and are able to move around a bit more, but are still close together. In a gas, the particles are very spread out and are able to move around freely.

We can model the arrangement of matter using the kinetic molecular theory, which states that the particles in a substance are in constant motion and that the properties of the substance depend on the average kinetic energy of the particles.

This theory helps us understand how matter behaves and how it changes between different states.

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Answer:

b

Explanation:

i got a hundred on it

Answer:

tod sun a qu e sjjee'

Explanation:

wins uend de iue dnauw oiptua hagnte pao

Answer:

starch and sugar

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Results from various climate model simulations suggest that the Global average temperature in 2100 could be 1.1 to 5.4 °C (2 to 9.7 °F) higher than today. The main cause of this temperature rise is "greenhouse gases" that trap carbon dioxide and other heat produced by human activity.

Global average temperature is projected to increase by 2°F to 11.5°F by 2100, depending on future greenhouse gas emission levels and the results of various climate models.

Fossil fuels release carbon dioxide, a greenhouse gas that can increase the average temperature of the earth. In a high-emissions scenario, global temperatures could rise by 4.4 degrees by 2100, says the IPCC, with potentially catastrophic consequences.

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Answer:

B

Explanation:

evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time

Theory of evolution includes the idea that the species are related to each other and changes with time. It states that inherited variation allows some members of a population to be more fit than others.

Theory of evolution is based on genetic variation which affect phenotype of an organism in particular population.

The main theories of evolution is as follows:

According to these theories, traits are inheritable, species changes over time, inherited variation allows some members of a population to be more fit than others.

Thus, the correct options are A, B and E.

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Most point mutations are harmless because the majority of the genetic code is non-coding, meaning that it does not contain instructions for making proteins.

Point mutations that occur in non-coding regions of the DNA will not affect the function of the proteins that are produced, and therefore, will not cause any harm.

Additionally, point mutations that occur in coding regions can sometimes result in a change in the amino acid sequence of a protein, but the change may not be significant enough to alter the protein's function. For example, a point mutation that changes one amino acid in a protein's sequence may not disrupt the protein's structure or function. This is known as a silent mutation.

Furthermore, some point mutations can even be beneficial by providing a selective advantage. For example, a point mutation that changes a codon for an amino acid to one that codes for a different amino acid but still allows the protein to function properly.

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The differential inheritance of genes for two different traits may be a valid conclusion based on Mendel's experiments.

Mendel concluded that traits can be divided into overt and latent traits. He named these dominant and recessive traits respectively. Dominant traits are traits that are inherited unchanged by hybridization.

The key principles of Mendelian inheritance are summarized by Mendel's three laws: Law of Independent Collection, Law of Domination, Law of Separation.

Through his pea breeding experiments, Mendel developed his three principles of inheritance that account for the transmission of genetic traits before anyone knew of their existence. Mendel's discoveries greatly expanded our understanding of heredity and led to the development of new experimental methods.

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Answer:

Snowy owl and Rough-legged hawk

Explanation:

Hard to tell but I believe I'm correct

The gene for "orange or black coat" is on the X chromosome, so if "orange" and "black" are active in different cells, female cats can have both colors of calico cat's coat. Yes, because male cats only have one X. The chromosome is her only one of these colors.

The calico, or more specifically tortoiseshell, pattern of cats is observed in female (or rarely male XXY) cats with different alleles at the coat color locus on the X chromosome. One of the X chromosomes carries alleles for black fur pigment and the other for orange fur pigment. Random inactivation of one of the X chromosomes causes orange and black spots on the cat's coat. Males with a single X chromosome have either orange or black fur, depending on which allele they possess. Calico cats have large white spots along with orange or black spots on their fur due to an autosomal gene that causes white spots.

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The body area where this specimen was collected is thorax when a thoracentesis specimen was collected and sent to the laboratory for testing.

The thorax is the place among the stomach inferiorly and the foundation of the neck superiorly. It paperwork from the thoracic wall, its superficial structures (breast, muscles, and skin) and the thoracic cavity. The location of the frame among the neck and the stomach. The thorax carries important organs, inclusive of the heart, fundamental blood vessels, and lungs. It is supported through the ribs, breastbone, and spine. A skinny muscle referred to as the diaphragm separates the thorax from the stomach. It gives a base for the muscle attachment of the higher extremities, the pinnacle and neck, the vertebral column, and the pelvis. The thorax additionally gives safety for the heart, lungs, and viscera.

Thus, the body area is known as thorax.

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