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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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Describe the flow of blood from the umbilical vein to the descending aorta in the developing fetus.
n200080 [17]

Oxygen and nutrients from the mother's blood are transferred across the placenta to the fetus through the umbilical cord. This enriched blood flows through the umbilical vein toward the baby's liver. There it moves through a shunt called the ductus venosus. This allows some of the blood to go to the liver.

A small amount of the blood continues on to the lungs. Most of this blood is shunted through the ductus arteriosus to the descending aorta. This blood then enters the umbilical arteries and flows into the placenta. The oxygen rich blood then returns to the fetus via the third vessel in the umbilical cord (umbilical vein). The oxygen rich blood that enters the fetus passes through the fetal liver and enters the right side of the heart.

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2 years ago
What is the main cause of an aurora
Phoenix [80]

When charged particles from the sun strike atoms in Earth's atmosphere, they causeelectrons in the atoms to move to a higher-energy state. When the electrons drop back to a lower energy state, they release a photon: light. This process creates the beautiful aurora, or northern lights

7 0
3 years ago
What proteins use ATP and what types do no use ATP?​
ale4655 [162]

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5 0
3 years ago
One set of coat color alleles in guinea pigs is multiple allelic. When homozygous the phenotypes are: CC, black; c k c k , sepia
mario62 [17]

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Explanation:

8 0
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In your opinion, is the nuclear membrane part of the endomembrane system? Why or why not? Defend your answer.
ipn [44]

Answer:

The correct answer will be- true.

Explanation:

The endo-membrane system is the system which is formed by the group of the membranes and organelles.  These membrane and organelles are considered endomembrane as they work together to perform the inter-related functions like the packaging, modification ad transport of the lipids and the proteins.

This system comprises of the nuclear membrane also as the outer nuclear membrane is continuous with the endoplasmic reticulum (organelle) directly and helps the synthesis and modification of the proteins and lipids. other organelles are the Golgi apparatus, vesicles, lysosomes and endosomes.

Thus, option-true is the correct answer.

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