Salutations!
What gas is the primary constituent of our atmosphere?
Nitrogen is the gas that is primary constituent of our atmosphere.
Hope I helped! ;)
<span>So far, astronomers have found more than 500 solar systemsand are discovering new ones every year. Given how many they have found in our own neighborhood of the Milky Way galaxy, scientists estimate that there may be tens of billions of solar systems in our galaxy, perhaps even as many as 100 billion.</span>
It's easy.
145=2x-5
150=2x
x=75
D a microscope because the scientist will have to eventually view the strains up close to see the progress of the antibiotic
The answer to your questions is D.