Answer:
If you truly enjoy something, it won't feel like work.
Explanation:
if your job is something you just have to do and you are not happy it will
feel like work, like chores. No one likes to wash dishes so it feels like work.
It is the gas that comes with diarrhea.
Answer:
Oxygen levels stay above 15 percent starting 200 million years ago
Explanation:
Atmospheric oxygen levels are related to the evolution on Earth and changes in geochemical cycles that involve climate variations.
The presence of O
2 and evolution of oxygen gave new opportunities to the life on Earth. Oxygen levels in atmosphere have fluctuated between 15% and 35% of atmospheric volume, since the start of the Cambrian period.
So, form the starting 200 million years ago, oxygen level stay above 15 percent and the correct option is "B".
It is Nucleic Acids, they consist of long chains of units like the proteins, but still both are different.
