Which of the following is a way humans use trees?
a. paper
b. food
c. wood
d. all of the above

d. all of the above

Trees are one of the vital resources that humans and other organisms need. They serve for shelter, food, safety against natural disasters -even prevents them, provides oxygen and other simple physiological needs.However, they also cater and provide more complex human needs.  

Both of them have a nucleus, golgi apparatus, cell membrane, smooth and rough endoplasmic reticulum, lysosome, and ribosomes.

Answerthermohaline circulation;