Which of these is a part of the geosphere?
a)a snow field
b)a crustal rock
c)a stream system
d)an animal skeleton

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane

Some substances but not other can cross the (blank) membrane of a cell

The human body maintains a temperature of around 98.6 degrees at all times. enzymes are involved in almost every chemical reaction in the body. which of the following describes the connection between these two statements? a. enzymes function best at a specific temperature. b. the body needs to be warm to prevent hypothermia. c. the body is kept relatively warm to prevent too much enzyme action. d. there is no connection between the two statements.