This is an ecological pyramid that shows graphically the population of each tropic level in a food chain

the awnser is d i think

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

b is the answer and if you need further with anything message me