What is the difference between a producer and a consumer in a marine food chain?

a.) producers break down dead organisms, whereas consumers eat other organisms.
b.) producers eat other organisms, whereas consumers make their own energy. c.) producers eat other organisms, whereas consumers break down dead organisms.
d.) producers make their own organic molecules, whereas consumers have to eat other organisms.

D.) Producers make their own organic molecules, whereas consumers have to eat other organisms.

Explanation:

A food chain is a sequence of transfer of food and energy when one type of organism is eaten by another type of organism. A marine ecosystem typically comprises of aquatic plants and animals.

Among the options given, D.) Producers make their own organic molecules, whereas consumers have to eat other organisms. is the correct option this is because of the fact that producers are able to conduct the process of photosynthesis in order to produce their food in the form of organic molecules such as glucose to obtain energy. But consumers are incapable of producing their food hence, they are dependent on other organisms for obtaining their food like plants or other animals.

c. earths continental crust is thicker than its lithosphere.

because, the lithosphere is the outermost layer of the earth/ 100 km thick and is defined by its machanical properties.the lithosphere contains oceanic and continental crust that varies in age and thickness across locations and geologic time. the lithosphere is the coolest layer of the earth in terms of temperature. the term lithosphere should not be confused with the use of "geosphere" which is used to indicate all of earth systems, including the atmosphere, hydrosphere   and biosphere. the surface of the earth can be divided into the continental crust and the oceanic crust.   the continental crust is made mostly of granite while the oceanic crust is made of basalt. the average thickness of the continental crust is 25 miles and the average thickness of the oceanic crust is 5 miles.   three types of rock, igneous, sedimentary, and metamorphic, make up the surface of the earth. that's why 3 option is preferable.