How has biodiversity been affected in areas where green crabs have been introduced?

a. additional predators have migrated into the area to feed on the crabs, causing an increase in predator diversity.

b. native shellfish populations have dramatically decreased as they are outcompeted by the crabs, causing a decrease in biodiversity.

c. the amount of predation on crabs by seabirds has gone up, but biodiversity has not been affected.

d. the overall number of crab species has dramatically increased, increasing overall biodiversity.

The correct answer is B) Native shellfish populations have dramatically decreased as they are outcompeted by the crabs, causing a decrease in biodiversity.

Biodiversity has been affected in areas where green crabs have been introduced in that native shellfish populations have dramatically decreased as they are outcompeted by the crabs, causing a decrease in biodiversity.

Green crabs represent a serious threat to biodiversity in the ocean ecosystem because they are predators that feed with animals that are part of the biodiversity such as clams, mussels, and oysters. As the predators they are, they can dramatically change the ecosystem by affecting the living and reproduction of many species.  

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.

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.