Answer:
Frogs must keep their skin moist. Otherwise, oxygen can't pass easily through it and the frog suffocates.
The nail plate is a hardened keratin plate that sits on and covers the nail bed.
Semen
I hope this helps you :)
<span><span>A. </span>B-cells
</span>
Which type of white blood cells is produced in the thymus and destroys the
cell membranes of bacteria are B-cells. These b-cells are also known and called as B
lymphocytes. Their function primarily is to create antibodies which combats
antigens such as bacteria. They are also responsible for immune regulatory
indications –cytokines. In contrast, T-cells are a type of white blood cells
that combat any substance from the inside or within the body.
First
Put together a survival pack
second
Understand the conditions in the area
lastly
Talk to an avalanche center