The diagram below shows the movement of substances A and B into a cell: Based on this model, which of the following statements is true?
a) ATP is not required to move either substance into the cell.
b) ATP is required to move both Substance A and Substance B into the cell.
c) ATP is required to move Substance A into the cell.
d) ATP is required to move Substance B into the cell.

Based on the results of this study, what questions remain unanswered? how can these questions guide future research

Control of the body is accomplished by which of the following body systems? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat