Where the weight of substance is maximum? (a) top of a hill. (b) center of the earth’ (c) Surface of the earth (d) Inside the earth Urgent. Please do it quickly.

Tropical rain forests support more species per unit area than any other terrestrial ecosystem. what is one way rain forests are important to the health of the biosphere?

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

Some plants have reproductive structures that them reproduce using natural forces or animals. how does the reproductive structure shown here ensure the reproductive success of plants?