What does true-breeding mean? the organism is self-pollinated. the organism can be cross-pollinated. the organism is easy to cultivate. the organism cannot be cultivated. the organism has 2 parents?

A species of birds entered a non native habitat and is now considered an invasive species. What's the most likely effect this species will have on native species that share the same resources?

One difference between bacteria and viruses is

Unlike mammals, fish A. need oxygen to survive B. release carbon dioxide C. can take in oxygen from the air D. utillze gills for gas exchange

Many different species of songbirds migrate into the United States and Canada from Central and South America each summer in order to take advantage of the caterpillars and other insects that hatch in the northern forests during the summer.

Virginia oyster in the Chesapeake bay ecosystem

Two species that reduce competition by utilizing the same resource but at different times are exhibiting commensalism competitive exclusion principle predation resource partitioning

Which of the following structures would normally be found in a plant cell but not in an animal cell?

Which statement describes an insect that undergoes incomplete metamorphosis? A. When the egg hatches, it immediately becomes an adult insect. B. The young insect resembles the adult insect. C. There are four distinct stages that show dramatic change.

What percentage of rain falls in the dry desert? A. less than 8%B. less than 9%C. less than 10%D. less than 5%

What's the difference between DNA and RNA?