Why do ecosystems need a constant input of energy from an external source

Do you think Biotechnology can be used in anyway in a case where someone has been bit by a venomous snake? If so how?

What does estrogen do?

Which organism has fur and mammary glands, but does NOT have opposable thumbs? A) The lizard B) The salmon C) The hamster D) The chimpanzee

Traditionally, evolutionary studies are done with DNA. For the miRNA lab, you are going to observe RNA rather than DNA. How can looking at expression of RNA contribute to understanding evolution?

How has the study of mitosis affected scientists' knowledge of cancer? a. It led to a study of how to induce cancer cells to divide more rapidly. b. It led to an understanding of how cancer cells divide so rapidly. c.

The three structural components of the modal model of memory are:

Which book is considered the catalyst of the modern environmental movement?

By which process are CO2 and H2O converted to carbohydrates?

T/F Metamorphic rocks are formed by a combination of heat, pressure, or hot fluids acting on an igneous, sedimentary or other metamorphic rock.

Which organism in the above pyramid has the least available energy