subject
Biology, 21.10.2019 22:30 talahtoo6659

Nitrogen how much of earths atmosphere?

a 100%
b78%
c 22%
d0%

ansver
Answers: 3

Another question on Biology

question
Biology, 21.06.2019 23:00
The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?
Answers: 3
question
Biology, 22.06.2019 03:00
The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.
Answers: 1
question
Biology, 22.06.2019 04:00
Why are fossils not found in igneous rocks? igneous rocks are made from cooling of lava or magma. igneous rocks are found too deep underground. igneous rocks are too dark in color to contain fossils. igneous rocks are too dense to contain fossils.
Answers: 2
question
Biology, 22.06.2019 15:00
What gases are carried by the blood
Answers: 2
You know the right answer?
Nitrogen how much of earths atmosphere?

a 100%
b78%
c 22%
d0%...
Questions
question
Mathematics, 20.07.2019 08:30