Fish are thought to have descended from ostracoderms.

A species of wildflower grows on hillsides in two locations. In the first (location A), the population is large and diverse, covering a large section of hillside.

If bio means "life" then biotechnology means what?

What is the main function of the Respiratory System? Pumping blood bringing oxygen to the cells throughout your body Supporting your muscles and protecting vital organs Taking in oxygen for the body and expelling carbon dioxide

How are changes in populations related to the availability of an ecosystem's resources?

In 1630 at the beginning of European settlement, about 425,000,000 hectares of the US were forested. By 2017, the area of forested land has declined to 300,000,000 hectares.

If a species can adapt to a changing environment or it's descendents will survive

Which of the following is an interaction in which one organism benefits and the other is harmed (+/-) ?

Which type of fossil is bone or tooth that have been covered by layers of sediment and preserved into stone. Body Fossil Mold Fossil Resin Fossil Trace Fossil

What determines how many trophic levels a rain forest ecosystem can support?

Match the meaning to the word part