Answer:
During active transport, substances move against the concentration gradient, from an area of low concentration to an area of high concentration. This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.
Explanation:
This should be correct.
Answer:
While the sun and moon both have tremendous impacts on earth, the sun definitely has the greater impact.
Explanation:
This is because while the moon's gravitational pull has a great effect on the ocean and tides, the sun literally heats up the planet to the exact inhabitable degree, as well as makes up our day/night schedule
Answer:
<em><u>Mammalary skin</u></em>
Skin is layered
Have hairs on it.
Acts as protectector
not so hard as epidermal
<em><u>Epithelial</u></em>
Can be layered
Dont have hair
Acts as protective layer also supports plants
Its hard
Answer;
+1,-1,+2,-2,+3,-3
Explanation;
-Valence is the number of electrons lost or gained to complete an element's outer energy level.
-When an atom gains or loses a valence electron, it forms an ion. Atoms form ions in order to help another to obtain a full octet and to stabilize the valence.
-Some atoms gain or lose electrons to form ions because they need to become more stable. They sometimes give them to have an outer shell or gain them to get a closer charge to eight.
