Answer:
Active transport
Explanation:
The pumping of sodium ions out of the cell into the environment where there is a lower concentration is achieved through active transport. Active transport is the movement of molecules or ions against a concentration gradient across living cell membranes with the utilization of ATP. Active transport takes place through carries located in the membrane.
The answer is water and the only oxygen-producing bacteria. This cyanobacterium is also known as Cyanophyta, are a phylum of bacteria that acquire their energy through photosynthesis, and are the only photosynthetic prokaryotes able to provide oxygen. In oxygenic photosynthesis, water is the electron donor.
Answer:
Based on the principle that physical changes in organisms during their lifetime- such as greater development of an organ or a part through increased use- could be transmitted to their offsprings.
Explanation:
Doctors recommend that infants should not be given cows milk until at least 1 yrs old, and whole milk (specifically) until she/he is 2 year or older, due to allergies and iron-deficiency anemia.
More info can be found here: http://www.parenting.com/article/ask-dr-sears-cows-milk-for-babies