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inna [77]
3 years ago
5

Multiple choice what is the ratio of compressions to breah

Biology
1 answer:
Karolina [17]3 years ago
5 0
30 chest compressions to 2 rescue breaths 
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Help plz :) <br> dyshujdheyudiokdmfj
Anna35 [415]

Answer: 30 years

Explanation: what is 30 plus 30... 60 it says he died in 1930 and discoverd the thing in 1960  add 30 boom its been 30 years

8 0
2 years ago
What is true about microevolution?
iris [78.8K]
Microevolution refers to changes that occur within a single species or group or organisms.  Microevolution, as opposed to macroevolution, occurs in a short period of time. In microevolution, the ancestor and the descendant obviously belong to the same type.  For example, certain pests have evolved in such a way that they become immune to pesticides; the same thing has happened to certain weeds and herbicides. Hope this helps.
6 0
2 years ago
Read 2 more answers
A hormone involved in the removal of excess glucose from the blood is:
irakobra [83]

Answer:

glucagon

Explanation:

Glucagon is a hormone that is involved in controlling blood sugar (glucose) levels. It is produced by the alpha cells, found in the islets of Langerhans, in the pancreas, from where it is released into the bloodstream.

7 0
3 years ago
Which human cells have 23 chromosomes? (Multi question)
Fed [463]

2. Egg cells!

Hope this helped you out!

6 0
2 years ago
Why are some moleules polar and other non polar
soldi70 [24.7K]

Answer: Polar molecules have an uneven distribution of electrons that cause one end of the molecule to have a positive charge and the other to have a negative charge. ... This means that in a polar bond, the electronegativity of the atoms will be different. For nonpolar bonds the electronegativity of the atoms will be equal.

Explanation:

3 0
3 years ago
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