Answer:
D. by taking in oxygen and cleaning out waste gases like carbon dioxide.
Explanation:
The respiratory system cleans out your carbon dioxide and replaces it with oxygen.
Therefore they are consider matter. Remember anything with a mass is matter.
Answer:
No, you need both mass and volume to determine its desity to see if it can float.
Explanation:
Density is the only thing affecting whether something floats or sinks. If an object has a higher density than the fluid it is in (fluid can mean liquid or gas), it will sink. If it has a lower density, it will float. Density is determined by an object's mass and volume.
It would be D. being able to eat plants that survive in the changed environment
Hope this helps :))
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Explanation:
The law of substitution is also known as the law of equi-marginal utility or the law of maximum satisfaction. ... According to this law, if a consumer is to use all the available resource in the consumption of a single commodity then marginal utility,derived from every additional unit will decrease successively.
