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olga55 [171]
3 years ago
10

HURRY!! How does topsoil keep pollution out of our aquifers?

Biology
1 answer:
mars1129 [50]3 years ago
7 0

Answer: it acts as a water filter as groundwater moves through it

Explanation:

Soil is a medium in which life is sustained through plant growth, the recycling of matter and nutrients, and the purification and cycling of water. Soil can act as a sponge to purify water, and thus plays a role in water quality.

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In Guinea pigs, short hair is dominant and long hair is recessive. A
larisa86 [58]

Answer:

a. S represents allele for short hair while s represents allele for long hair.

b. Ss (male) × ss (female)

c. 50% Ss, 50% ss

d. 3 long hair (ss), 3 short hair (Ss)

Explanation:

This question involves a single gene coding for hair length in guinea pigs. The allele for short hair (S) is dominant over the allele for long hair (s).

a. Letter "S" will represent the allele for short hair while letter "s" will represent the allele for long hair.

b. According to this question, a heterozygous male is crossed with a long-haired female. The genotype of the male guinea pig is "Ss" while that of the female is "ss". (see attachment for the punnet square)

c. The possible genotypes of the offsprings in this cross are: Ss and ss, each carrying 50% each as they are produced in a ½ Ss: ½ ss.

d. Since 50% of the offsprings will be both short haired and long haired, If they have six babies, 3 of them will be short-haired while 3 of them will also be long-haired.

7 0
3 years ago
Name two that the theory of evolution is currently being used to improved the quality of human life
DerKrebs [107]

your body and nature is about human life

7 0
3 years ago
In addition to carbon, carbonate minerals contain
shutvik [7]
Carbonate groups contain a single carbon atom, and three oxygen atoms in a trigonal molecular geometry. The carbon atom has two single bonds to two oxygen atoms and a double bond to the third oxygen atom. Therefore, in addition to carbon, carbonate minerals contain oxygen. An example of a carbonate mineral is calcium carbonate, often found within rocks. 
8 0
3 years ago
Why might two elements possess similar chemical properties?
Studentka2010 [4]

<u>A (they belong to the same group of the periodic table)</u>

<u></u>

The answer is A because C doesn't have a causal relationship, D doesn't strongly effect most chemical properties, and chemical properties remain unchanged with state of matter.

7 0
3 years ago
Red-flowered snapdragons are crossed with white-flowered snapdragons, producing all pink snapdragons in the F1 generation. What
Nitella [24]

Answer:

Red (1/4), Pink (1/2), white (1/4)

Explanation:

This question involves a single gene coding for flower colour in the snapdragon plants. The gene exhibits incomplete dominance, because the allele for red color (R) is incompletely dominant over the allele for white color (W), hence an intermediate phenotype is produced as pink color (RW).

The pink colored snapdragon plant is produced in the F1 generation. When these F1 offsprings are crossed i.e. RW (pink) × RW (pink), gametes with R and W alleles are produced by each F1 parent.

Using these gametes in a punnet square (see attached image), four possible offsprings with genotypes; RR, RW, RW and WW will be produced in the F2 generation.

RR offsprings (1/4)- Red flowered

RW offsprings (2/4 or 1/2)- Pink flowered

WW offsprings (1/4)- White flowered

8 0
3 years ago
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