Which of the following is not a biogenous sediment?
a. manganese nodules
b. calcareous ooze
c. siliceous ooze
d. phosphate-rich material
plz if you have the answers to he oceanography unit test feel free to share
plz and

A. manganese nodules.

Biogenous sediment is sediment that is obtained from materials produced by marine plants or animals such as teeth, bones, shells, coral reefs and others. It comes from the hard parts of these dead animals and plants. Calcium and silica are the main biogenous sediments. For example, calcium carbonate is chief ingredient of coral reef. Teeth, bones and shells are made up of calcium. Silica is the outer cell wall of diatoms and protozoa and they are also useful for making shells of marine organisms. Phosphorous is also the component of organic matter deposited by the dead organisms.

Therefore, manganese nodules is not the part of biogenic sediment.

a. suckling by young

b. hypothalamus

c. dopamine

d. trh

e. anterior pituitary

f. mammary glands

g. milk production

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms