Which gas is the most abundant in our atmosphere?
a. Oxygen
b. Nitrogen
c. Carbon Dioxide
d. Hydrogen

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural.question 2 reflects a moral or social value.question 3 refers to something that can be measured.question 4 reflects a question that can’t be observed.

Which could be a pathway of food through an ecosystem