Answer:
D
Explanation:
Population is generalized to all individuals.
Environmental science is a branch of biology focused on the study of the relationships of the natural world and the relationships between organisms and their environments. An example of environmental science is the study of the natural world and how it relates to recycling and mulching.
Answer:
It is the sun in most ecosystems as the light energy is fixed during photosynthesis and then transferred to other organisms via the food chain.
Explanation:
