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ivanzaharov [21]
2 years ago
6

When a virus enters the body, if it is captured by an antibody, then a ______ will come along to destroy it. *

Chemistry
1 answer:
oksano4ka [1.4K]2 years ago
7 0

Answer:

I think it's a red blood cell

Explanation:

I have that feeling about it

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Give an example of how each compound is used or found in nature. Be sure to use complete sentences.
puteri [66]
Water is found in lakes and rivers. Its purpose in nature is to hydrate animals

Hydrogen gas is not abundant in nature, but hydrogen is abundant in water. Hydrogen (bonds) help ice float. Otherwise, freezing lakes would kill animals (it actually doesn't since the ice creates a "coat" above the water").

Ammonia is nitrogen-rich molecules that plant uses to get their nitrogen. It comes from the part of the nitrogen cycle where dead plants and animals are decayed.

Carbon dioxide is what we exhale. Plants "inhale" carbon dioxide and use that for photosynthesis.

Hydrogen sulfide is emitted by volcanoes and by anaerobic (oxygen-less) decay from bacteria.

Have an awesome day! I hope this helps.
8 0
3 years ago
Scientists have measured and recorded the average rainfall of an area over several years to see if there is a pattern. Which kin
tia_tia [17]
The correct answer is d
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What are some physical means of separating something?
Alika [10]
Mixtures come in many forms and phases. Most of them can be separated, and the kind of separation method depends on the kind of mixture it is. Below are some common separation methods:
3 0
2 years ago
What role does valence electrons play in reactivity for an element?
kirza4 [7]

Explanation:

The valence electrons within an atom is the number of electrons in its outermost shell.

These electrons are used by an atom to react with one another. They  determine the extent to which an atom is ready to combine either by losing, gaining or sharing these electrons.

  • Every atom desires to have a completely filled outermost shell.
  • Only the elements in group 8 have a complete octet.
  • The need to attain stability is driven by the number of electrons in their valence shell.
  • Therefore, some atoms are very reactive.
  • Those needing one electrons to complete their octet and also those that must lose one electron are very reactive.
4 0
2 years ago
How many grams of CaCl, are needed to make a 15% by mass solution with 520g of water?
allsm [11]

Answer:

many

Explanation:

many many many many

5 0
2 years ago
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