Few producers live deep below a lakes surface. suggest an explanation for this pattern

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Natural resources are any materials that humans obtain from the earth to meet our wants and needs.

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.