One interaction between the nervous system and the skeletal system involves the calcium stored in the bones. The nervous system requires calcium for the proper transmission of nerve impulses. In which other way do the skeletal and nervous systems interact?

A. Red blood cells are produced in bone marrow.

B. The brain controls the contraction of muscles.

C. Bones protect the brain and spinal cord from injury.

D. The brain helps mount a defense against foreign bodies.

5) these are organisms where the genetic material is not bound by a nucleus. they are usually unicellular.

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.

Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean