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Artyom0805 [142]
3 years ago
5

Lead released into the environment makes its way into the air, soils, and water and can remain in the environment as dust, indef

initely. The EPA and the Centers for Disease Control and Prevention (CDC) agree that there is no known safe level of lead in a child's blood. Lead is harmful to health of all age groups, but especially children. The U. S. Has banned leaded gas and leaded paints, yet this toxin is still found in our drinking water. What is the MAIN cause of lead inner drinking water?
Biology
1 answer:
andre [41]3 years ago
7 0

Answer:

The fact that oil factories have caused many lead infestations and poisonings have been known for centuries scientists have been studying this problem for years only recently people have been banned from used these products near water (such as lakes, rivers, and oceans) because of the rising numbers of fish poisoning and fatalities in people and the fishes environments

Explanation:

Thanks for posting your question fam

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Answer:

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Explanation:

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The human cell has the largest surface area to volume ratio is Sperm cell or spermatozoa  and its ratio is 1.55

<u>Explanation:</u>

Spermatozoa is a uni-flagellar motile sperm cell that basically determines the sex of an offspring. It moves from the haploid male gamete,its contributes in 1/2 nuclear genetic information to diploid.

The surface area of sperm cell is measured by micro-metric method or electron mircographs using stereo-logical method. While the volume will be measured by stereology or radio label volume exclusion method. The volume and surface area inversely proportional to cell size.

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Answer:

Option-B

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Plants integrate the signals obtained from these receptors and then activates the gene which will be involved in the phototropism.

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