D) Amphibia was considered to be the first to develop lungs
A physical environment with different species that interact with one another and with non-living thing is called an ecosystem
Double fertilization is a complex fertilization mechanism of flowering plants. This process involves the joining of a female gametophyte with two male gametes. It begins when a pollen grain adheres to the stigma of the carpel, the female reproductive structure of a flower.
Answer: the answer is C
Explanation:
Pancreatic proteases (such as trypsin and chymotrypsin) - which help to digest proteins.
