Complete each statement with the correct term from the drop-down menu. Many molecules are moved through the body by
.

provide structure for plants.

determine what people look like.

Cells are surrounded and protected by
.

speed up chemical reactions in the body.

Hemoglobin, a protein, is built by
.

The human body is insulated by

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a.) antibody, antibiotic b.) antigen, antibody c.)antibiotic, antibody d.)antibody, antigen