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gizmo_the_mogwai [7]
3 years ago
5

What is the dark crumbly high organic part of soil?

Biology
1 answer:
zmey [24]3 years ago
5 0
The organic component of soil, formed by the decomposition of leaves and other plant material by soil microorganisms= humans
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A person with a broken pelvis would probably be unable to _____________.
NeX [460]
I think the correct answer is C. Hope this helps.
5 0
3 years ago
Read 2 more answers
We are studying 3 strains of bacteria, with populations p1, p2, p3, in an environment with three food sources, A, B, C. In a day
Nastasia [14]

Answer:

The population of each bacteria in 1, 2, 3 are 12, 8, and 7 respectively.

Explanation:

From the given information:

For  food source A; we have:

3P₁ + P₂ + 2P₃ = 58    units of food A ---- (1)

For food source B; we have:

2P₁ + 4P₂ + 2P₃ = 70   units of food B  ---- (2)

For food source C; we have:

P₁ + P₂  = 20   units of food C    ----- (3)

From equation (1) and (2); we have:

3P₁ + P₂ + 2P₃ = 58

2P₁ + 4P₂ + 2P₃ = 70

By elimination method

 3P₁ + P₂ + 2P₃ = 58

-

 2P₁ + 4P₂ + 2P₃ = 70

<u>                                       </u>

<u> P₁  -   3P₂   + 0    = - 12    </u>

P₁ = -12 + 3P₂   ---- (4)

Replace, the value of P₁  in (4) into equation (3)

P₁ + P₂  = 20

-12 + 3P₂ + P₂  = 20

4P₂ = 20 + 12

4P₂ = 32

P₂ = 32/4

P₂ = 8

From equation (3) again;

P₁ + P₂  = 20

P₁ + 8 = 20

P₁  = 20 - 8

P₁  = 12

To find P₃;  replace the value of P₁ and P₂ into (1)

3P₁ + P₂ + 2P₃ = 58

3(12) + 8 + 2P₃ = 58

36 + 8 + 2P₃ = 58

2P₃ = 58 - 36 -8

2P₃ = 14

P₃ = 14/2

P₃ =  7

Thus, the population of each bacteria in 1, 2, 3 are 12, 8, and 7 respectively.

4 0
3 years ago
Which type of organism would MOST likely benefit directly from increased levels of CO2?
Salsk061 [2.6K]

Answer:

Phytoplankton use carbon dioxide and produce oxygen during photosynthesis; phytoplankton, fish, and seals use oxygen and produce carbon dioxide during respiration. Which can provide the most energy in an ecosystem

Explanation:

3 0
2 years ago
A species of salamander has two tail length phenotypes. Short tails are completely dominant over long tails. A scientists crosse
goldfiish [28.3K]

Answer:

D. If all of the offspring are short-tailed, the unknown individual is the homozygous dominant genotype.

Explanation:

The short tail phenotype is completely dominant over the long tail phenotype. When a short tailed salamander with unknown genotype is crossed with a homozygous recessive long tailed salamander, the cross is called testcross. Lets assume that the allele "S" gives "short tail" phenotype while the allele "s" gives "long tail" phenotype.

If the "short tailed salamander" with unknown genotype is homozygous dominant (SS), the process of the testcross will express only dominant trait (cross 1). On the other hand, if the "short tailed salamander" with unknown genotype is heterozygous dominant (Ss), segregation of alleles during gamete formation would form two types of gametes (cross 2). The 50% progeny would express the "long tail" phenotype while rest 50% will express the "short tail" phenotype.

8 0
3 years ago
nerve networks that include both sympathetic and parasympathetic fibers that reach the same structure are called nerve networks
Lelechka [254]

Central plexuses are the name for nerve networks with sympathetic and parasympathetic fibers that all travel to the same structur automobile plexuses.

<h3>What is the term for a sympathetic and parasympathetic network?</h3>

Involuntary physiological activities including heart rate, blood pressure, breathing, digestion, and sexual arousal are regulated by the autonomic nervous system, a part of the peripheral nervous system. Sympathetic, parasympathetic, and enteric are its three physically separate divisions.

<h3>Can a nerve have both parasympathetic and sympathetic functions?</h3>

Both sympathetic and parasympathetic nerves innervate several target areas (eg the heart, the iris muscle, some salivary glands, the gastrointestinal tract and pelvic organs).

To know more about autonomic plexuses visit:-

brainly.com/question/6575249

#SPJ4

4 0
1 year ago
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