Are chemical

substances necessary for an

organism to be healthy and

survive.

A. Resources

B. Nutrients

C. Energy

Which of the following groups is made up of organisms that are most similar genetically A. Phylum B. Order C. Class D. Genus

If a dna molecule is made up of 42% guanine what percent of it would be adenine

How do cells maintain water balance through osmosis? If a salt water fish is placed in a fresh water aquarium, water will leave the fish's cells. In the experiment, the only isotonic solution was the 10% salt water solution.

What phases make up the cell cycle?

The male reproductive glands, which produce sperm and hormones, are the

List 6 forms of renewable energy and compare the advantages and disadvantages of each

Black hair is dominant to red hair two black cocker spaniels have 12 puppies 9 black and 3 red what is the genotype of each parent

Which action may have caused botulism? A. Defrosting the chicken on the counter. B. Using the same cutting board for chicken and lettuce without washing it. C. Consuming tuna from a dented, bulging can. D.

How does the body use energy?

6. A substance that enters Earth's cycles and does harm to living things is A. oxygen. B. hydrogen. C. freshwater. D. a pollutant.