Which is a true statement A. biotic factors only rely on abiotic factors to survive
B. abiotic factors includes all living things in the ecosystem
C. abiotic factors include sun, water, and plants
D. biotic and abiotic factors are both necessary for a sustainable ecosystem ​

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

What do scientists need to look at before developing an argument

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming