Aproximatley what percentage of the U. S. energy is renuable energy? A. 5% B. 9% C. 15% D. 25%

What is the source of energy in most ecosystems? animals plants oxygen sunlight

In order to keep all other things the same and isolate the effects of one particular variable in the biology experiment, Kate will want to do which of the following? Check all that apply. Offer the same type of food to the rats in each trial.

The most common effective way to prevent healthcare associated infections (hais) is to use: 1) sterile technique 2) complete isolation 3) disinfection 4) hand hygiene

What is food called when it initially enters the stomach? -Anatomy: digestive system

Which of the following statements regarding RNA polymerase II, the enzyme that synthesizes mRNA in eukaryotic cells, is true? a.

Why can many ecosystems exist in one boime

Filtration in the glomerulus is specific. a. True b. False

3. Which process makes sexual reproduction possible and also increases the variation of inherited traits? a. The wrapping of DNA around histones b. Meiosis c. Gene expression d. Mitosis

How do trees improve water quality? a. Tree roots anchor soil in place, preventing runoff. b. Water is filtered as it passes through the root systems of trees. c. An adult tree can store nearly 250 gallons of water. d. All of the above

Which statement describes a property of both prokaryotic and eukaryotic cells