Answer:
A selective pressure is any reason for organisms with certain phenotypes to have either a survival benefit or disadvantage.
Explanation:
Answer:
This process is what gives energy to all living organisms either directly or indirectly.
Explanation:
Testis is the <span>male gland that secretes a thin, milky secretion, that will help to neutralize the acidic environment of the male urethra and vagina of the female</span>
Coal, oil, and gas consist largely of carbon and hydrogen. The process that we call "burning" actually is chemical reactions with oxygen in the air. For the most part, the carbon combines with oxygen to form carbon dioxide (CO2), and the hydrogen combines with oxygen to form water vapor (H2<span>0). In both of these chemical reactions a substantial amount of energy is released as heat. Since heat is what is needed to instigate these chemical reactions, we have a </span>chain reaction<span>: reactions cause heat, which causes reactions, which cause heat, and so on. Once started the process continues until nearly all of the fuel has gone through the process (i.e., burned), or until something is done to stop it. Of course, the reason for arranging all this is to derive the heat.</span>
