The role birds play in ecosystems include
A. Provide nitrogen compounds to the environment
B. Both A and B
C. Being predators and prey.
D. Transplanting mollusks to freshwater habitats

c.being predator and prey

Example:

birds hunt for worms and they get hunted from bigger birds.

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).