Endocytosis and exocytosis are forms of active transport. What is active transport?(1 point)

A. the movement of molecules up a concentration gradient from low to high, using energy

B. the movement of molecules down a concentration gradient from high to low, using energy

C. the movement of molecules up a concentration gradient from low to high, using no energy

D. the movement of molecules down a concentration gradient from high to low, using no energy

Type the correct answer in the box. use numerals instead of words. fiona has a lovely flower bed in her yard. she wants to add a fence along one side of the flower bed. the fence material is sold in meters. fiona knows that her flower bed is 200 centimeters in length. how much fencing material does fiona need in meters? fiona needs meters of fencing material for her flower bed.

What causes darkening of the skin as melanin production increases

Pls ! in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.