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AnnyKZ [126]
3 years ago
10

a spaceship is designed to support animal life for a multiyear voyage to the outer planets of the solar system. plants will be g

rown to provide oxygen and to recycle carbon dioxide.; since the spaceship will be too far from the sun for photosynthesis, an artificial light source will be needed. what wavelengths of light should be used to maximize plant growth with a minimum of energy expenditure?; a) full-spectrum white light; b) green light; c) a mixture of blue and red light; d) yellow light; e) uv light
Biology
1 answer:
Margarita [4]3 years ago
6 0
Uv light is light that covers the electromagnetic spectrum from infrared to near-ultraviolet, or all wavelengths that are useful to plant or animal life
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Which of these types of weathering does not require the presence of water?
julia-pushkina [17]
The answer is oxidation or chemical weathering. There are three main types of weathering, which includes, mechanical weathering, biological and chemical weathering. Mechanical weathering is caused by wind, sand rain, thawing, freezing, and other forces that can physically alter the rock. Biological weathering is caused by the activities of plants and animals as they grow, nests and burrow. Chemical weathering is caused by chemical reactions rather than by mechanical means.
5 0
3 years ago
Environmental factors can influence natural selection because they can increase or decrease
olchik [2.2K]

Answer:

Environmental factors can influence natural selection because they can increase or decrease the amount of genetic variation in a population.

Explanation:

Natural selection is a process that involves the survival of species through changes in the expression of their genes, making possible the process of adaptation to environmental changes. It is one of the explanations for the biological evolution of species.

The second premise, necessary for natural selection to be possible, implies the existence of a variability (genetics) of traits among individuals in a population.

The other premises of natural selection are the faculty of traits to be inheritable and that genetic variability should lead to reproductive success and survival.

  • <em>The other options are not related to the process of natural selection, since it is not possible for natural selection to increase or decrease the number of chromosomes, in addition to the fact that genetic variability must be observed in a population, not in a single individual, to be considered natural selection </em>
4 0
3 years ago
Read 2 more answers
What is not true regarding fenestrated capillaries?
dangina [55]

The question is incomplete. The complete question is as follows:

Which of the following is not true regarding fenestrated capillaries?

A) Fenestrated capillaries in endocrine organs allow hormones rapid entry into the blood.

B) Fenestrated capillaries in the small intestine receive nutrients from digested food.

C) Fenestrated capillaries are essential for filtration of blood plasma in the kidney.

D) Fenestrated capillaries form the blood-brain barrier.

Answer:

Fenestrated capillaries form the blood-brain barrier.

Explanation:

The fenesterated capillaries are small fine thin capillaries that helps in the exchange of substances. These capillaries are mainly found in the kidney, small intestine and glands.

The fenestrted capillaries allow the exchnage of hormone in the blood and in the kidney for the filtration. The nutrients can be easily exchanged by the capillaries present in the small intestine. The blood brain barrier function is not performed by the fenesterated capillaries. They allows the rapid exchange function and not as the barrier.

Thus, the correct answer is option (D).

8 0
3 years ago
A farmer uses genetic engineering to inject dairy cows with a genetically altered hormone (GAH) to result in the production of m
a_sh-v [17]

Answer:.Use of the GAH may increase the amount of hormones in the milk.

Explanation:The increased amount of hormones could cause unintended transmission of the genetically altered hormone or related hormones to be present in the milk.

6 0
3 years ago
Read 2 more answers
Genotypes usually involve some combination of dominant and recessive alleles. What is the most common inheritance pattern?​
mylen [45]

Answer:

The correct answer is option D) six dominant and two recessive.

Explanation:

The most common genetic inheritance pattern involves cross between heterozygous recessive parents which means it has one allele of each character in every parent (suppose Tt).

Cross between these parents provide these offspring; TT, Tt, Tt, and tt which exhibit 3:1 ration which can also be mention as 6:2 which means 6 out of the 8 has dominant (homozygous or heterozygous) and 2 out of 8 offsprings are recessive alleles.

Thus, the correct answer is option D) six dominant and two recessive.

4 0
3 years ago
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