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Fed [463]
3 years ago
11

The lowest layer of a glacier is generally _____.

Biology
2 answers:
Savatey [412]3 years ago
7 0

Answer:

A. Ice

Explanation:

glaciers generally accumulate more snow ... and the buried layers slowly grow together to form a thickened mass of ice.

Korvikt [17]3 years ago
4 0

Answer:

Ice

Explanation:

If you dug down into the accumulation zone of a glacier, you would find three main layers. The top layer is snow that thickens further up the glacier. Below this layer is firn, a transitional layer between snow and ice, which is as hard as ice but not as dense. The deepest layer is ice.

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False. Sometimes pushing yourself can help your mind to tell itself "I can do this!" Besides, sometimes pain is a great motivator!
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TGGTATCCAT of a coding strand of a gene is​
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Explanation:

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Which answer best defines what the Lotka-Volterra predator-prey model mathematically describes?-The competition among many preda
yanalaym [24]

Answer:

The simultaneous effect of a predator population on a prey population and a prey population on a predator population over time.

Explanation:  

The mathematical models of Lotka-Volterra equations explain the existing interaction between species in which prey and predator influence and affect each other. The model follows a few assumptions,    

  • The ecosystem is isolated and closed. There is no migration.
  • The whole individuals are reproductively equivalent.
  • In the absence of the predator, prey shows an exponential growth rate. The prey is in the ideal environment.  
  • When there is no prey, the predator population decreases exponentially because of the lack of food. The predator environment is ideal, but it is limited by prey density.  
  • The predation rate is proportional to the encounters rate, which also depends on density.  
  • The predators affect the prey populations, inducing its decrease proportionally to the number of prey and predators present.  
  • The prey population also influences the predator population proportionally to the number of encounters between the two species.  

In these equations, the variable D is the number of predators, and P the number of prey items.

The parameters are always constant:  

• r1: prey growth rate.  

• a1: predator hunting success.  

• r2: predator growth rate.  

• a2: the success of the predator in hunting and feeding.

In nature, many factors affect interactions, such as dense-dependent factors and dense-independent factors. Also, in reality, there are stochastic factors. Stochasticity refers to the variability in the system involving those factors that are affecting or influencing population growth. Stochasticity might be related to good years and bad years for population growth.

In real situations, the compliance of the whole assumption does not occur. The previously mentioned constants might vary, constantly changing the interaction between the predator and the prey. These parameters change in different degrees, resulting in varying circumstances for both species.

3 0
3 years ago
Greater amounts of the pigment carotene are produced when the skin is exposed to the sun
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The most abundant protein is dead epidermal structures such as hair and melanin.
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3 years ago
The concept of endosymbiosis (chloroplast & mitochondria) is widely accepted. What kind of relationship is it?
melamori03 [73]

Answer:

mutualistic

Explanation:

The interaction between two organisms in which both the organism gets benefitted from each other is called a mutualistic relationship. This mutualistic relationship is seen in the concept of endosymbiosis.

According to the endosymbiotic theory chloroplast and mitochondria are evolved by engulfment of different bacteria by ancestral cells. Then these bacterial remained in a mutualistic relationship with each other and the ancestral cell evolved into a eukaryotic cell.

So as mitochondria and chloroplast live with a symbiotic relationship with eukaryotic cells, therefore, it is considered as mutualistic relationship.

4 0
3 years ago
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