What is the difference between a community and an ecosystem? a. an ecosystem comprises a community and the abiotic environment. b. an ecosystem includes only the plant community or communities present in an environment. c. an ecosystem is a type of community. d. an ecosystem includes only the abiotic aspects of a particular environment?

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.

Which of the following is caused by reproductive isolation within a species? a. a decrease in gene flow b. an increase in genetic flow c. a decrease in genetic drift d. an increase in gene flow

Use the numbers to place the companies in order of greatest comparative advantage to least comparative advantage in producing large tubes of toothpaste.