Are substances that are capable of enabling as well as inhibiting the flow of electricity. a. insulators

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

Why are fossils not found in igneous rocks? igneous rocks are made from cooling of lava or magma. igneous rocks are found too deep underground. igneous rocks are too dark in color to contain fossils. igneous rocks are too dense to contain fossils.

The vaccine in a flu shot contains weakened flu viruses. how does a flu shot work with the immune system? a. it destroys lymphocytes. b. it destroys macrophages. c. it activates macrophages. d. it activates lymphocytes.