There aren't enough oxygen molecules in the air are higher altitudes
Answer:
the answer is :
Lane 3 contains the longest DNA fragment
Answer:
The small molecules such as water and carbon dioxide can easily or directly pass through the membrane because they are neutral and so small. the movement of water through the membrane is referred to as osmosis. water can also pass through the membrane through channel protiens called aquaporins (AQP).
Explanation:
No,they kill all ages for ex.A pack of lions went hunting leaving their cubs behind and a pack of hyenas come and they are hungry they will eat the food that they can
Guard cell o is ordered to opening and closing of stomata.