CAN SOMEONE PL HELP! Which of these are characteristics of bryophytes? (Select all that apply.)
can survive without water for long periods
lack leaves and stems
grow to be relatively tall
contain chlorophyll

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.

How are fossils used to date organisms?