Explanation:
Oxygen is the answer. (option B)
there is less energy on the 5th level, the less the energy, the smaller the food chain
A choice that is involved in both sexual and asexual reproduction are spores.
Answer:
The nervous and endocrine systems are two forms of communication system in the human body that integrate, coordinate and respond to sensory information which is received by the human body from its surroundings.
Explanation:
hope this helps
Polysaccharides are more difficult to digest then monosaccharides because they are much larger molecules.
