Introduced species tend to spread rapidly and ... cost humans money
damage the environment
disrupt the existing food webs
all of these

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called

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