Answer:
Water plants will absorb carbon dioxide for photosynthesis, and some plants will also absorb ammonia (as a source of nitrogen for growth). Aquatic animals like fish and snails absorb oxygen and release carbon dioxide directly into water through specialized structures like gills.
Explanation:
The rate of evolution is the means of
Darwinism
Answer:
False
Explanation:
Mass and volume are two different quantities. In fact:
- Mass is a scalar quantity representing the "amount of matter" contained in a certain substance. It is measured in kilograms (kg), which is one of the 7 fundamental SI units.
- Volume is a scalar quantity representing the amount of "three-dimensional space" occupied by an object or a substance. It is measured in cubic meters (
).
Therefore, mass and volume are two different quantities. They are related through another quantity called density, given by:
![d=\frac{m}{V}](https://tex.z-dn.net/?f=d%3D%5Cfrac%7Bm%7D%7BV%7D)
where
m is the mass
V is the volume
So the density of a substance represents the amount of mass contained in a certain volume of the substance.
Cell membranes help organisms maintain homeostasis by controlling what substances may enter or leave cells
The answer is: [A]: "A process that cleans pollution from a local pond" .
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