2 years ago

How does the immune system uses feedback mechanisms?

1 answer:

4 0

Answer:The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with.

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5. Write word equations for the following reactions

Andrews [41]

Answer:

a) Sulphur + Oxygen → Sulphur dioxide

b) Carbon + Oxygen → Carbon dioxide

c) Sulphur + Iron → Iron sulphide

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3 years ago

Which can not be decomposed by a chemical change? 1) a compound 2) a heterogeneous mixture 3) a homogeneous mixture 4) an elemen

Mnenie [13.5K]

4.) an element cannot be decomposed by a chemical change, it is a pure substance and no other materials compose it.

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3 years ago

The goal of this experiment is to separate a mixture of two unknown compounds into individual components and to identify the com

kolbaska11 [484]

Answer: Ethyl Ethanoate can be used as a developing solvent. It’s safer.

Explanation:Di ethyl ether should be carefully used because it’s highly flammable and intoxicating when inhaled and can cause explosions because of its high reactivity to air and light.

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2 years ago

The product of nuclear ___ is several nuclei

garri49 [273]

I think Its "fission"

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3 years ago

Which statements correctly describe the rock cycle? Check all that apply.

pickupchik [31]

Answer: I italicize for checking

Rocks are preserved through the process.
Rocks change from one type to another.
Different rock groups are interrelated.
Rocks change from one type to another in a specific order.
Environmental conditions influence a change in rock type.

Explanation:

Rocks are preserved, as in you can't destroy them completely, but no, they don't stay the same they change.

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3 years ago