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Levart [38]
3 years ago
7

Which of the following is not a source of groundwater pollution? A.landfills b.septic tanks c.smoke stacks d.fertilizer

Biology
1 answer:
Crank3 years ago
8 0

The correct answer is c. smoke stacks.

Smoke stacks are chimneys or funnel shaped structures which emit smoke from a factory, vehicles and industrial set ups. Smoke stacks mostly discharge carbon dioxide and water vapor and oxides of nitrogen into the atmosphere. The exhaust released from smoke stacks cause air pollution. Air pollution can cause ailments like asthma and cancer. Thus, smoke stacks are not a source of water pollution.  

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A receptor can directly open a channel and thereby exert a(n) ____ effect, or it can produce slower but longer ____ effects.​
svlad2 [7]

Answer: ​ionotropic; metabotropic

Explanation:

A receptor can directly open the channel and exerts an ionotropic effect. The ionotropic effect takes place by the help of ionotropic receptors. These receptors are membrane bound receptor proteins which responds by the bonding of the ligand.

Due to ligand binding the channel opens and allows the movement of ions into the cells which helps in either increasing or decreasing the action potential.

The receptors can also bind to the ligand and produce metabotropic effect which means by the second messenger.

6 0
3 years ago
A zygote is a
grandymaker [24]
D. Fertilized egg A zygote is a cell which is a diploid cell in the combination of the spem and egg cell. Furthermore, this cell which came from the parent cell was successfully fertilized at the fallopian tube of the female reproductive system. A zygote will develop to become an embryo for the next few weeks.
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Vanyuwa [196]
Endoplasmic reticulum
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The committee that advises the Fed on the growth of the money supply and the level of interest rates is the
il63 [147K]
The committee that advised the Fed on the growth of the money supply and the level of interest rates is "B", the Federal Open Market Committee. 
<span>The Federal Open Market Committee is the branch of the Federal Reserve Board that determines USA monetary policy. It consists of twelve members and holds eight meetings a year. The committee reviews current economic and financial conditions to plot the way forward for the Federal monetary policy. It also assesses the risks to its long-term goals of price stability and sustainable economic growth.</span>
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3 years ago
Which of the following will most likely reduce the acidity of rain in an area
ANEK [815]

Answer:

produce energy without using fossil fuels.

Explanation:

People can use renewable energy sources, such as solar and wind power. Renewable energy sources help reduce acid rain because they produce much less pollution.

5 0
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