Greater temperature fluctuations occur

a.) in terrestrial ecosystems
b.) in marine ecosystems
c.) in river ecosystems
d.) in lake ecosystems

Organisms are classified, or grouped into categories, based on similarities in their characteristics and/or evolutionary relationships. the study of how organisms are classified is known as

The response is the basis for vaccination. primary secondary tertiary none of the above

How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased