c.Stomata are generally open during the day to remove excess water from the planet and closed at night to keep oxygen from escaping.
A
Why?:
because i was asking myself what else would make a abyssal plain? and i decided it was a, i WAS gonna say D but i thought really hard about it (plz mark me brain list if it's right is not it's okay and i hope i'm right!) :3
First one is correct. ...remeber my teacher telling us enzymes never get used
Antigens<span> are foreign particles, usually proteins, which are capable of generating an immune response in the body, a property known as immunogenicity. This immune response consists of specific </span>antibodies<span> which are generated by plasma cells as a result of exposure to a specific epitope presented by the </span>antigen<span>.</span>
