Answer:
Active transport
Explanation:
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration—against the concentration gradient. <u>Active transport requires cellular energy to achieve this movement.</u>
Answer:
a plant can be categorized as a weed if it is growing where it is not wanted/needed
Answer:
77.5 years
Explanation:
Preliminary data indicates that life expectancy at birth in the United States had reached a record high in 2003.
I think your answer is a taxon
