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elena-14-01-66 [18.8K]
3 years ago
8

How do nutrients from food enter the circulatory system?

Biology
1 answer:
svp [43]3 years ago
6 0

Nutrients are transported throughout the body in blood through capillaries.

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1) After watching the video “How wolves change rivers”, in 2 - 4 sentences explain how human activity changed Yellowstone Nation
Pavel [41]

Answer:

Human interaction with the ecosystem has rapidly spread disease to Yellowstone's wildlife, which has proven to have adverse effects on populations. Also, humans tend to leave trash in poor areas. Littering is a problem in Yellowstone because it can be ingested by the wildlife and also pollute the park.

Explanation:

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Musculo que tiene las características tanto de musculo esquelético como de musculo liso. Se encuentra en el corazón y sus contra
max2010maxim [7]

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El músculo estriado cardiaco es una forma especializada de músculo estriado, conforma la pared del corazón, cuya contracción rítmica es involuntaria.

5 0
3 years ago
Consider the evidence that explains how physical separation of two populations of a species can cause speciation. What effect do
Tom [10]

Answer:

  • Interruption in the genetic flow between separated groups
  • The emergence of new mutations in each of the groups, and their accumulation in time. Slow and gradual differentiation between populations.
  • Genetic divergence by natural selection and reproductive isolation
  • Prezigotic isolation mechanisms

Explanation:

Allopatric speciation consists of the geographic separation of a continuous genetic background that can give place to two or more new geographically isolated populations. These separations might be due to migration, extinction of geographically intermediate populations, or geological events. In this speciation, some barriers impede genetic interchange, or genetic flux, as the two new groups that are separated can not get together and mate anymore. These barriers might be geographical or ecological.

The process of allopatric speciation involves different steps that affect organisms:

  • The emergence of the barrier.
  • Interruption in the genetic interchange
  • The occurrence of new mutations and their accumulation in time in each population. Slow and gradual differentiation.
  • Genetic divergence by natural selection and reproductive isolation makes it impossible for the two groups to mate even if the barrier disappears.
  • Prezigotic isolation mechanisms will be favored by selection if occurs a secondary contact between the new species in formation.
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3 years ago
In dna replication which strand grows continuosly toward the
Kay [80]
Replication Fork! Is the answer! Hope this helps!
4 0
3 years ago
What is the allele frequency?
navik [9.2K]

Allele frequency:
Number of times an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene
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3 years ago
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