C. testable and observable
The answer is A, 'a mammal' because it goes with the copulative verb 'to be', i. e., 'is'.
Answer:
chloroplasts
Explanation:
photosynthesis takes place inside plant cells in small things called chloroplasts ( mostly found in the mesophyll layer) contain a green substance called chlorophyll
Because electrons are “pulled” towards the oxygen.
The overall charge of an atom is neutral because it has the same amount of protons and neutrons. They are positive and negative so they cancel each other out.
