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2 years ago

What is an ecosystem

Biology

1 answer:

Tamiku [17]2 years ago

5 0

Answer:

A place where plants and animals interact with each other and the physical environment.

If too many plant eaters were alive there wouldn't be any more plants so other animals eat the plant eaters, but if there is too many animals to eat the animals that eat the plants there would be too many plants so there is another animal to balance it out.

Hope this helps.

Explanation:

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kotegsom [21]

Answer:

The four Inner planets have slower orbits, slower pin, no rings and they are made of rock and metal. The four Outer planets have faster orbits and spins, a composition of gases and liquids, numerous moons, and rings.

The Outer planets are made of hydrogen and helium, so they are called gas giants.

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3 years ago

Addition of nutrients to Water by human activity is called

wolverine [178]

A common way that humans pollute water is through the addition of nutrients (fertilizers and sewage) to water as nonpoint source pollution. These added materials are full of nitrogen and phosphorus, two nutrients that encourage the growth of aquatic producers, such as algae.

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3 years ago

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2 years ago

Identify two requirements for gas exchange which are accomplished by the gills in a fish. How does their structure help to satis

mina [271]

Answer:

Question: Two requirements for gas exchange which are accomplished by the gills in a fish include:

1. Water flowing in opposite directions across the gill lamellae for gas exchange, in other words, respiration is experienced by the fish.

2. The fish allows water through its mouth, then forces the water to drain through the gills supporting gill lamellae, and enhancing gas exchange.

Question: How does their structure help to satisfy these requirements?

1. The rows of gill filaments with numerous folds through diffusion makes sure oxygen from the water moves from a place of more concentration to the blood of the fish which has less concentration causing the removal of carbon dioxide.

2. The large surface area of the gill means it has to maximize the low percentage of dissolved oxygen in the water compared to the higher percentage of oxygen in the air makes it possible for water to pass through the mouth and empty through the gills after the mouth is closed.

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3 years ago

miv72 [106K]

Answer:

Cytokinesis is the process of the cell cycle which divides the cytoplasm of the parent cell into two cells.

The process of cytokinesis involves the membrane of the cell, so the process differs in plant and animals cell as the plant cell exhibits two layers that are the cell wall surrounding the plasma membrane while animal cell lacks the cell wall. the main difference in both the process is:

1. Plant cell division-occurs by cell plate formation while animal cell division- occurs by full cleavage.

2. In-Plant cell- no cytoskeleton is involved while in animal cell- Cytoskeleton components are actively involved

3. Plant cell division is centripetal while animal cell division is centrifugal

4. Plant cell-wall formation is present while animal cell-Wall formation is absent

The similarities in both the process are that it generates the genetically identical daughter cells. In both cells, cytokinesis after the karyokinesis and is the last stage of the division.

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3 years ago