Answer: salinity is lower in areas that have decreased precipitation
Reason: the density of water increases as the salinity increases.
Observe it. I would observe the features of it, and research it
The circulation of blood refers to its continual flow from the heart, through branching arteries, to reach and traverse the microscopic vessels in all parts of the body, reconverging in the veins and returning to the heart, to flow thence through the lungs and back to the heart to start the circuit.
Answer: Tropomyosin serves as a contraction by blocking the myosin binding site on the actin molecules.
Explanation: