Changes in allelic frequency are always driven by natural selection.

Answers

Answer 1
Answer: false they change in all sorts of stuff.
Answer 2
Answer: The correct answer is false. Allele frequencies can all be changed through other processes such as Genetic Drift or a sudden isolation of a species.

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Which type of rock was precipitated from seawater as the Mediterranean Sea evaporated between 8 million years ago and 5.5 million years ago

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the answer to this question is Rock Salt

List 3 examples of organisms that would be classified in domain eukarya

Answers

this is 100 percent right I did the graded assignment 

protista,fungi, animalia and plantae


The demand for environmental scientists and hydrologists is expected to increase because of a

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increased demand for natural resources; need to enforce environmental laws and regulations; need to analyze human impact on the environment and to invent ways to restore it

Answer:

Explanation:

increased demand for natural resources; need to enforce environmental laws and regulations; need to analyze human impact on the environment and to invent ways to restore it

Fever is helpful in fighting bacteria because

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Fever causes you body to warm up which stops bacteria from multiplying and even cause the bacteria to die because of the warm temperatures.
With cold and flu season almost here, the next time you're sick, you may want to thank your fever for helping fight off infection. That's because scientists have found more evidence that elevated body temperature helps certain types of immune cells to work better.

Which of these domains is composed of unicellular prokaryotes that have cell walls that do not contain peptidoglycan? archaea archaebacteria eubacteria eukarya

Answers

Answer:

The correct answer in this case is the first option archaea.

Explanation:

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Let's solve this!

Within the domains, that of Bacteria and that of Arqueas are very similar, since both group prokaryotic unicellular organisms. One of the differences is that one of the domains has organisms with a cell wall with peptidoglycan and the other domain does not.

The domain, and the correct answer in this case is the first option archaea

Final answer:

Archaea, also known as archaebacteria, are unicellular prokaryotes that do not contain peptidoglycan in their cell walls. They differ from Eubacteria, which do contain peptidoglycan. Eukarya, on the other hand, contains all eukaryotic cells.

Explanation:

The domain that is composed of unicellular prokaryotes that have cell walls that do not contain peptidoglycan is

Archaea (or archaebacteria). Unlike Eubacteria, the other major group of prokaryotes, the cell walls of Archaea do not contain peptidoglycan. Each of these domains, Archaea, Eubacteria, and Eukarya, represent a major category of life. It's worth noting that Eukarya contains all organisms with eukaryotic cells, including humans, animals, plants, and fungi.

Archaebacteria are known for surviving in extreme environments, such as hot springs or salt lakes.

Learn more about Archaea here:

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Plants have a ____ which prevents bursting in a hypotonic environment

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The answer is cell wall. It is the rigid outer layerof plant cells that is composed of subunits of cellulose molecules,pectin,  lignin, or hemicellulose. It enablesthe plant to withstand turgor pressure,without bursting, required to give them support.