Photosynthesis is used by plants to crest food. This is essential to all life because of the oxygen plants give off in the process, and the food source the plant becomes.
The answer is E because heart is circulatory and brain is part of your nervous system.
Answer:
B
Explanation:
An ionic bond is formed when an atom usually metallic, loses an electron to become positively charged and another atom usually non-metallic, gains such electron lost and becomes negatively charged..
Organisms who happen to be best suited to an environment and reproduce most successfully will be consider successful in terms of natural selection.
