How much nicotine to kill half of humans who weighed 172 pounds

Lead emissions since the early 1980s have

frez [133]

Lead emission since early 1980s have DECREASE DUE TO LEAD FREE GASOLINE.
Lead is a natural occurring element that is found in small quantity in rocks and soils. Lead emission is an important environmental health issue because a very small quantity of lead can cause adverse effects on the nervous system of unborn babies and young children. Because of this, the government took all necessary measures to ensure that its emission was drastically reduced.

4 0

4 years ago

When a label says that a food has 20 amino acids what are they really trying to say?

Kay [80]

it contains proteins

6 0

3 years ago

List the organs of the urinary system and locate them in the view.

Stolb23 [73]

The organs of the urinary system include the kidneys, renal pelvis, ureters, bladder and urethra.

The function of the urinary system is to filter blood and thus produce urine as a waste by-product. The body absorbs nutrients from food and converts them into energy. After the body has gained the required food nutrients, certain waste by-products remain in the bowel as well as in the blood.

The urinary system assists the body in eliminating liquid waste called urea with the help of kidneys, and also maintains fluid balance i.e. water and mineral (like sodium, potassium) balance.

Urea is transported to the kidneys via the bloodstream. It is finally removed together with water and certain other wastes in the form of urine.

To learn more about kidneys here

brainly.com/question/13941295

#SPJ4

3 0

2 years ago

DNA molecules separate into single strands which are then used to construct two identical strands of DNA this process ensures ge

makvit [3.9K]

Answer: A)consistency

Explanation:

7 0

3 years ago

Basic body color for horses is influenced by several genes, one of which has several different alleles. Two of these alleles— th

Phantasy [73]

Answer:

<h2>No,</h2><h2>Phenotypic Ratio: 1 Chestnut : 2 Palomino : 1 Dilute</h2>

Explanation:

As given:

The chestnut (dark brown) allele and a diluting (pale cream) alleles show incomplete dominance, means that both the alleles in heterozygous condition show their effect. So the heterozygous show the phenotype which is intermediate of both the parents, here a horse heterozygous for these two alleles is a palomino.

There is in fact, no particular allele present for palomino, this phenotype only results due to having two different alleles for a gene. So, palominos can never be pure-breeding because they can never be homozygous.

Let P1 chestnut and P2 dilute,

Palomino is P1P2

The Punnett’s Square for palomino mated to palomino:

P1P2× P1P2

Gametes are: parent-1 P1 and P2 , parent-2: P 1 and P2

Progeny are: P1P1, P1P 2, P 2 P1, P2 P2

Genotypic Ratio: 1 P1P 1 : 2 P1P 2 : 1 P2P 2

Phenotypic Ratio: 1 Chestnut : 2 Palomino : 1 Dilute

3 0

4 years ago