Answer:
Root hair cells are alive and therefore need energy, which is why root hair cells contain many mitochondria in them. Root hair cells don't contain chloroplasts. Chloroplasts are used by the plant to make food using light energy. Since the roots aren't exposed to any form of light, they have no need for chloroplasts.
The fossil record shows a sequence from simple bacteria to more complicated organisms through time, it is very reliable because it is physical evidence and by studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth.
Answer:
an aquatic ecosystem is an ecosystem in the body of water examples are marine ecosystem and fresh water ecosystem
The answer is D, because it is a form of camouflage and an adaptation to the environment for self defense
Hii...so the answer is
The four layers are the external oblique, internal oblique, transverse abdominals.
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