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2 years ago

Why do mosses grow well in the Arctic tundra?

Biology

1 answer:

KATRIN_1 [288]2 years ago

7 0

Te correct answer is that they do not have true roots.

The soil in the tundra is frozen to the surface most of the year and only the surface layer thaws in summer. The depth of the thaw will determine how far the roots of the plants will be able to deepen. That is why there are no trees in the tundra, since their roots cannot develop. Therefore, the mosses find their niche in these areas, since they do not have true roots, but rhizoids whose main function is the fixation to the substrate, and do not need more than a few millimeters deep for it. It is important to clarify that the vegetation in the tundra is of low height, squatted, since not only must they withstand low temperatures, but they must withstand strong blizzards. Mosses and lichens predominate in these areas.

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How is fresh water collected in the rain forest?

uranmaximum [27]

Answer:

if you mean how you can gain water in the rainforest?

Kindly, look at below ^_^

Explanation:

The role of rainforests in the water cycle is to add water to the atmosphere through the process of transpiration (in which plants release water from their leaves during photosynthesis). This moisture contributes to the formation of rain clouds, which release the water back onto the rainforest.

Water Basics

The first thing you should do if you're stranded in the wild is find a source of drinkable water. The most obvious sources are streams, rivers and lakes. Animals always know where the water is, so be on the lookout for wildlife or animal tracks. Lush green vegetation is also a sign that water is nearby. Swarming insects may be a hassle, but they also signal that a water source isn't far away. Bird flight paths in the morning or evening can point you in the right direction. Stay on the move until you find a water source. When you pause to rest, use your ears -- rivers can be heard in the quiet woods from great distances. Remember that water always flows downhill, so low-lying areas and valleys are a good bet.

If you find a muddy area, there may be groundwater available. Dig a hole about a foot deep and one foot in diameter and wait. You may be surprised to find that the hole is soon filled with water. This groundwater will be muddy, but straining it through some cloth will clean it up, and it will get you by in the short term. It's crucial to remember that any time you drink found water without purifying it, you're taking a risk.

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4 0

3 years ago

Read 2 more answers

A population of 100 tigers has 30 with horizontal stripes. Using pedigrees, you ascertain that horizontal striping is caused by

bixtya [17]

Assuming that this population is in Hardy-Weinberg equilibrium, we can sayt that the probability that, given enough time, all tigers in the population will have horizontal stripes is 30% = 0.3.

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Available data:

Population size, N = 100 tigers
Number of Tigers with horizontal stripes = 30
Horizontal stripes is caused by an autosomal recessive mutation.

We need to know the probability that all tigers in the population will have horizontal stripes, which is the recessive phenotype.

We assume that the population is in Hardy-Weinberg equilibrium, so there should be no evolution.

Since the population is in H-W equilibrium, the allelic, genotypic and phenotypic frequencies will remain the same generation after generation.

Now, we will calculate the allelic and genotypic frequencies of horizontal striped individuals in the population.

There are 100 individuals, and only 30 have horizontal stripes.

So, the phenotypic frequency, F(HS) is 30/100 = 0.3 = 30%

Since this is a recessive phenotype, this value equals the genotypic frequency, F(hh) = 30%

Finally, we can get the allelic frequency by taking the square root of this value.

F(hh) = q² = 0.3

f(h) = q = √0.3 = 0.55 = 55%

According to these calcs, the probability for the fixation of the recessive allele is 55%, and the probability that all individuals express the recessive horizontal stripes phenotype is 30%.

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You can learn more about Hardy-Weinberg equilibrium at

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6 0

2 years ago

Pls help ASAP pls pls

V125BC [204]

Answer:

Less than one light year.

Explanation:

The sun is approximately 93,000,000 miles away from the earth. A light year is 5,865,696,000,000 miles.

7 0

3 years ago

Which of the following are stramenopiles?

leva [86]

Answer:

Brown algae and diatoms

8 0

3 years ago

What does it mean for an organ to have the quality of "irreducible complexity"?

MArishka [77]

Explanation:

Irreducible complexity (IC) involves the idea that certain biological systems cannot evolve by successive small modifications to pre-existing functional systems through natural selection.

7 0

3 years ago