What determines how many covalent bonds two atoms can make?

How is natural selection in the evolution of long necks in giraffes best explained?

In what step of the scientific method do we record data

Fitness trade-off refers to selection favoring which genotype? a. homozygous dominant b. heterozygous c. homozygous recessive d. no genotype is favored

What is the purpose of scientific argumentation? Create a network for scientists who share the same vision. Create interest in a new discovery. Establish credibility between fellow scientists.

Which term describes the chemicals that adjust and maintain activities in the body

10. Which of the following is an emerging dis- ease that was unknown 50 years ago? a. malaria b. dengue fever C. Lyme disease d. schistosomiasis

You eat a large meal and then hike up a hill. What kind of energy transformation is your body performing? A. Chemical energy to kinetic energy and nuclear energy B. Potential energy to sound energy and nuclear energy C.

Which nervous systems balance each other to provide homeostasis?

The modern classification system is based on A - putting organisms into categories based on where they live. B - putting organisms into categories based on how they reproduce. C - putting organisms into categories based on similar characteristics.

Classify the mutations as somatic or inherited A. Mutations in the KRAS gene in lung cells promote continuous cell growth B. Mutations of the BRAC1 gene in egg cells lead to breast cancer C.