Question

the survival of organisms can be threatened by
a. extreme temperatures.

b. the risk of diseases.

c. the danger of being eaten by other organisms.

d. all of the above

Explanation:

Extreme temperatures can disrupt an organism's physiological functions and habitat, diseases can weaken or kill organisms, and predation directly reduces an organism's chance of survival. All these factors pose threats to organism survival.

Answer:

D. all of the above