Well, when chromosomes cross over during prophase 1 of meiosis, the homologous pair of chromosomes exchange segments of DNA which happen to be the genes. So the significance of crossing-over during prophase 1 is that it adds genetic variation to sexually reproducing organisms.
the branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms.
B: things made of a single atom
Harris should limit his consumption of table salt which contains large amounts of sodium. sodium in large quantities interferes with water balance by increasing the amount of water retained by the kidney. if too much water is contained it inn creases the body's blood volume which increases the blood pressure
Answer:
i would have to say B
Explanation
Convection is the circular motion that happens when warmer air or liquid — which has faster moving molecules, making it less dense — rises, while the cooler air or liquid drops down. Convection currents within the earth move layers of magma, and convection in the ocean creates currents
