A food chain is a circle. The transfer of energy moves from plant to animals to decomposer and back to plant. What supplies the energy the plants need?
A. animals
B. sun
C. water
D. wind

20 the main source of energy for our planet comes from the

Which of the following can occur to two segments of a population if they are geographically isolated 1.) they can only share some types of genes 2.)both groups most likely become extinct 3.)they find a way to come back together 4.)eventually they become separate species

The bacteria in the human gut feeds on the food we eat and us break it down for better digestion. what does this exemplify? (a) predator-prey cycle (b) parasitism (c) mutualism (d) a disrupted food chain