Which best explains why a pyramid is used to represent energy flow within an ecosystem? Hint: what happens to available energy as you go up?

1. Because available energy decreases as you go up

2. Because the organisms get bigger

3. Because the amount of the organism is more

4. Because further of organisms use less energy

When plants use sunlight to make food, the energy of sunlight is

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers

They live on every continent except antarctica