Answer:
a: metaphase
Explanation:
the chromosomes are aligned at the metaphase plate
A subsurface rock layer that is composed of clay and bedrock and is an impermeable barrier to water flow would be described as a(n) <u>aquifer(option b)</u>.
An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials (gravel, sand, or silt).
The study of water flow in aquifers and the characterization of aquifers is called hydrogeology. Aquifers occur from near-surface to deeper than 9,000 metres (30,000 ft).
There are three different types of aquifers: confined, unconfined, and perched. Recharge zones are typically at higher altitudes but can occur wherever water enters an aquifer, such as from rain, snowmelt, river and reservoir leakage, or from irrigation.
To learn more about aquifers, here
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Long Answer:
We put chlorine in our water because we want to be protected from bacteria. The chlorine keeps our water clean and nice and blue. If you have green water then it is time to get an enhancement of chlorine. Another reason we put chlorine in our water is so all the bugs that try to stick on us beneath the pool do not have a chance because they go to the surface and away to the skimmer. The last reason is, because we need to keep things away like dirty items that land in the water so we do not touch the water and get sick.
Short answer:
<span>We put chlorine in the water so we are protected from bugs and dirty things in our pool. Chlorine also keeps the water nice and blue so we know that it is clean.
Good Day!</span>
