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Charra [1.4K]
3 years ago
9

Groundwater cannot be exchanged between aquifers and surface water. True False

Biology
2 answers:
elena-s [515]3 years ago
6 0
The answer would be false
notka56 [123]3 years ago
5 0
Yes it would be false, my dad used to work there. At aquifer.
to work on their machines.
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In a small, isolated population of piranhas, one individual is born with a synonymous mutation in a gene that codes for the beta
IrinaVladis [17]

Answer:

The correct answer is: Genetic Drift.

Explanation:

  • In any population of any species having two or more alleles encoding for different genes, the frequency of occurrence of each allele among the individuals of a population can vary.
  • The frequency of one allele may be far more or far less than the frequency of other alleles.
  • The frequency of any particular allele is dependent on factors like random mating among individuals as well as natural selection, that tends to increase the frequency of those alleles which provide a survival advantage to the individual in a given environment.
  • Genetic drift can be defined as a phenomenon due to which the frequency of an allele encoding for a particular gene undergoes drastic change (increase or decrease) in a population due to random mating as well as natural selection.
  • In the given statement, one individual of an isolated population of piranhas underwent synonymous mutation in the beta-globin encoding gene.
  • A synonymous mutation can be defined as such a change in the nucleotide sequence of a gene that does not affect the sequence, structure or function of the protein encoded by it.
  • The increase in the frequency of the mutated form of the beta-globin gene after five generations to 5% indicates that due to the impact of random mating or natural selection or both, this has happened.
6 0
4 years ago
Which type of change was seen in the ecosystems that were affected by the 1988 fires in Yellowstone Park
charle [14.2K]

Answer:SECONDARY SUCCESSION Explanation:Secondary succession can happen after primary succession or independently of primary succession.An example of Secondary Succession by stages:

1. An area of growth.

2. A disturbance, such as a fire, starts.

3. The fire destroys the vegetation.

4. The fire leaves behind empty, but not destroyed soil.

5. Grasses and other herbaceous plants grow back first.

6. Small bushes and trees begin to colonize the public area.

7. Fast-growing evergreen trees and bamboo trees develop to their fullest, while shade-tolerant trees develop in the understory.

8. The short-lived and shade-intolerant evergreen trees die as the larger deciduous trees overtop them. The ecosystem is now back to a similar state to where it began.

(Hope this helps)

3 0
3 years ago
Since the Wicked Witch from the Wizard of Oz melted away when she was doused with water, what do you think her cell membranes we
Bad White [126]

Answer:

silicone

Explanation:

cause it melts

5 0
3 years ago
Scientific explanations are accepted when
Stolb23 [73]

<u>ANSWER:</u>

Scientific explanations are accepted when there is sufficient evidence to prove them right. In addition, scientific explanations must be logical to be acceptable and must match as much evidences as possible.

<u>EXPLANATION:</u>

  • Scientific explanations explain something about the natural world by making use of observations and measurements.
  • These are usually tentative proposals that need to be verified or proved to be true.
  • The observations and measurements must prove the scientific explanation to be true or must support it so that it becomes acceptable.
3 0
3 years ago
Use the drop-down menu to answer the question.
Korolek [52]

Answer:

Nonmetallic

Explanation:

I just took the assignment and I am Big Brain.

7 0
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