Which is a heterotroph?
A. Grass
B. Lion
C. Dandelion
D. Oak Tree

Lion

Explanation:

Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs. Heterotrophs occupy the second and third levels in a food chain, a sequence of organisms that provide energy and nutrients for other organisms.

Mountain lions, or cougars, are carnivorous heterotrophs and feed on a wide range of prey, such as insects, small mammals, reptiles and birds, but their most common prey is deer.

Grass, like the majority of green plants, is autotrophic. Thus, Grass produces its food through the photosynthesis process, which uses solar energy, water, and carbon dioxide. Thus, it is not a Heterotroph.

Dandelion is a typical photosynthetic autotroph. (Dandelion) An autotroph is an organism that can produce its own glucose and use it as energy. The Dandelion is a plant that can preform photosyntesis by collecting sunlight, water, and nutrients and create it’s own glucose. This makes the Dandelion an autotroph.

Trees, like all other plants, are autotrophic, meaning that they can produce food through the process of photosynthesis. Oak trees are considered autotrophs because they produce their own food.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!