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hram777 [196]
3 years ago
7

Which of these are the main working cells of the specific immune response? A) histamines and interferons, B) antigens and antibo

dies, C) B cells and T cells, D) self and nonself cells
Biology
1 answer:
Debora [2.8K]3 years ago
7 0
C) B and T cells are specific or adaptive immune response
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A sediment core is removed from the floor of an inland sea. The sea has been in existence, off and on, throughout the entire tim
sertanlavr [38]

Answer:

A. volcanic ash layers were regularly interspersed between the sedimentary strata.

Explanation:

The discovery of a fossil is a moment of accomplishment for archaeologists, hence the date dating process begins and the older the relic the greater its value for paleontology. Chemistry is present in this process, more precisely the carbon element, but other elements can be used as uranium, lead, potassium and argon.

In the case of the fossils reported in the question, to assign absolute dates to fossils in this sediment core would be most useful if volcanic ash layers were regularly interspersed between sedimentary strata because it would separate sedimentation times and allow the use of more than one element. dating, making the search more complete and the date most credible.

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3 years ago
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Describe this rock and record your observations. Some things to think about are shape, size, structure and color.
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It looks like a large rock with a yellowish color, and there are multiple smaller rocks inside the outer core.

Explanation:

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Fats are specialized lipid molecules, and enzymes are specialized protein molecules. How do the functions of fats and enzymes di
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Fat is used as a form of energy when the body really needs it. where as an enzyme is used to speed up a reaction in the body or might be needed to start a reaction in a body.

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Explain the important of insects​
grigory [225]
Answer: Insects create the biological foundation for all terrestrial ecosystems. They cycle nutrients, pollinate plants, disperse seeds, maintain soil structure and fertility, control populations of other organisms, and provide a major food source for other taxa


Facts about insects: Insects are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body, three pairs of jointed legs, compound eyes and one pair of antennae.
8 0
2 years ago
Do all cloned plants have the same genetic material? why or why not?
natulia [17]

Answer:

A new study of plants that are reproduced by 'cloning' has shown why cloned plants are not identical. Scientists have known for some time that 'clonal' (regenerant) organisms are not always identical. Now researchers believe they have found out why this is the case in plants: the genomes of regenerant plants carry relatively high frequencies of new DNA sequence mutations that were not present in the genome of the donor plant.

Explanation:

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