Which term describes a living organism's position in the flow of energy through an ecosystem?

A. trophic level

B. food web

C. biotic factor

D. energy pyramid

Explain why scientists rejected Lamarck's ideas about evolution. What is an example that they might have used in their argument against his ideas? Enter your answer in the space provided.

Genes are unable to determine a person's a. eye colorb. athletic abilityc. number of teethd. shape of earlobes

Which of the following statements does NOT correspond to instinctive behavior? a. it is a triggering mechanism c. it is modified by learned behavior b. it is elicited by specific stimuli d. it is based on past experience

What variable in the hardy-weinberg equation describes the proportion of heterozygotes?

Matter is found throughout the universe is the water we drink considered new matter

Day and night are caused by Earth's revolution on its axis.

If one species in a community dies out or moves, the community will

This is the organizational level between Family and Class in scientific classification schemes.

What food safety hazard can occur when solutions used to clean a frozen yogurt machine?

How many more bacteria cells are in or on humans?