Explanation:
DNA is made up of nucleotides. And each nucleotide consists of phosphate, a sugar group and a nitrogen base. Nucleotides are attached to form two long strands that form a structure called a double helix.
Answer:
This keeps ecosystem dynamics in balance. For example, if a population of foxes becomes too large it could put pressure on rabbit populations. By predating the foxes, a tertiary consumer, such as a hawk, keeps the populations in check and reduces the amount of rabbits that are consumed by the foxes.
Answer:
Skin turgor
Explanation:
refers to how quickly your skin returns to its normal position after being pinched. It’s often used to check for dehydration in children and older adults.
Answer:
<h2>Exchange</h2>
Explanation:
A transaction in which two or more organizations or people give and receive something of value is called Exchange
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Phospholipids, 2 layers. The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances in and out of cells. The basic function of the cell membrane is to protect the cell from its surroundings. It consists of the lipid bilayer with embedded proteins.