The answer is B. Enzymes have optimum temperatures, and are very specific. If substrate concentration is 0, enzymes will not work.
The right answer is: Leptin
.
Leptin is a hormone closely linked to the regulation of energy consumption and expenditure: appetite, metabolism, and hunger.
A hormone is a protein with a messenger function. This means that once released into the bloodstream, she goes to another part of the body to transmit a message to specific receptors.
Leptin is manufactured in white adipocytes (adipose tissue) where triglycerides (fats) are stored and acts on the hypothalamus.
Volcanic eruption. a solidified lava flow will devoid plants of necessary soils in which to grow.
Stratosphere is the correct answer
