Which of the following organisms not an arthropod.
A. grasshopper
B. earthworm​

Communication and transportation have improved as a result of scientific advancements. select the best answer from the choices provided of mark this and return save and exit next

In two sentences explain the differences of neutrophil and macrophage

What is point source pollution of an aquatic ecosystem? a) pollution of freshwater sources b) pollution from many sources that combine into one c) pollution that occurs over a wide area; water that runs off from fields, parking lots, and other land surfaces d) pollution that can easily be identified with a single discharge source, such as an open pipe which drains into a body of water