Which characteristics do scientists use to group species?

common name and popularity

age and date of discovery

health and reproductive success

ancestors and DNA

What is the end, and the end of the beginning

You are an epidemiologist in charge of county health services for low income, HIV positive individuals in NJ. Which data would be most important for planning the long-term health care needs of this community, incidence or prevalence?

How do volvox get rid of waste/water?

Why can a wolf be considered both secondary consumer and tertiary consumer

Living cells use as their main source of energy

What does action force mean

Which cell organelle synthesizes phospholipids and steroids

Margot is pregnant with her first child, and she is deliriously happy! She and her husband have some tests taken, but before the doctor can come in and review the results, Jim sneaks a peek at the file with the test results.

How do cancer grows and spreads

Which statement best illustrates the concept of the interrelationship of living things with the physical environment, as found in the definition of ecology? A) Hawks and eagles often compete with each other. B) White-tailed deer shed their antlers.