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luda_lava [24]
3 years ago
13

Choose all the answers that apply.

Biology
1 answer:
Arte-miy333 [17]3 years ago
3 0
Bias is a judgement that is not based on fact
Observation is usually the first step of an experiment
Scientists try to understand the phenomena that occur in the enviroment

These three are true

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Explain how the fossil record indicates a long history of changing life forms.
sergey [27]
<h2><u>Answer:</u></h2>

Fossil: is preserved pre historic life form present under ground at high pressure for a long time.Animal die and burried under layers of sediments.

It provides evidence about the history of life on earth. It also shows  different groups of organisms, including species,that have changed over time. Because the formation of any fossil depends upon the precise combination of conditions.

As the world changes, plants and animals change with time . From fossils we compare organisms of modern time with ancient , the species we see today are very different from species that lived in the past. Thus, the fossil record can be used to show that organisms changed to meet new condition.


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<span>|Protista are reclassified as scientists learn more about their diversity.
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Coexist... They don't harm us... And they even protect us from other organisms outside our body

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A Virus Is A Piece Of __________ Enclosed In A Capsid.<br> A) DNA<br> B) Protein<br> C) Nucleic Acid
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This would actually be known to originate in the "nucleic acid". This would have nothing to do with the DNA it's self, and also protein has nothing to do with it also.<span>Nucleic Acid would be small particals in the cells that would consists of molecules would some sort of chain which would then lead to the DNA, but it would actually have not resemblance of the nucleic acid at any point.

</span>A Virus Is A Piece Of <span>Nucleic Acid</span> Enclosed In A Capsid.
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tresset_1 [31]
The correct answer is that "the T cell enters a state of anergy".

The activation of T cells requires two signals: (1) antigen specific signal presented by an antigen presenting cell (either a macrophage or a dendritic cell) that activates t cell receptors and (2) co-stimulatory signals that is not antigen specific but rather found in the plasma membrane of the antigen presenting cell (i.e. CD28). In the absence of a co-stimulatory signal, the t cell will enter a state of anergy or the inability to produce an immune response toward an offending antigen.
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