What do you think humans and arthropods have in common?

Which of the following are energy solutions that release pollution into the air>

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

How much time has elapsed from the very beginning of "the memior of the conquistador bernal diaz del castillo" to the end? a. castillo's whole life b. a quarter of an hour c. a few weeks d. a decade