They are desert plants that don't need lots of water.
Hormone receptor molecules may be increased in number/decreased in number/chemically altered in order to change the target's cell sensitivity to a given hormone.
Because 2 sex cells will combine to form one diploid cell.
Cellular respiration is the process where oxygen and glucose are both used to create APT, Carbon Dioxide, and water.
The answer is "Glucose and Oxygen"
