PLSS HELP The "sticker burr" plant in Texas has barbs to help attach the seed to things
that pass by. What type of seed dispersal would be used by a sticker burr?
A. Gravity dispersal
B. Water dispersal
C. Wind Dispersal
D. Animal dispersal

Natalie had random hand movements when she was two months old. when she was six months old, she used to grab a block with her whole hand. now at the age of ten months, she can grasp the same block with her thumb and forefinger. this sequence of growth in her hand and finger movements is according to the pattern.

The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.

Pulmonary arteries carry highly oxygenated blood. true or false?