Question

a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false and R is true.
7) A: Our atmosphere contains 78% nitrogen gas. R: Nitrogen cannot be taken directly by plants and animals.​

Answer 1

Answer:

b) Both A and R are true but R is not the correct explanation of A

Byee. I hope it helpss!!

Answer 2

Answer:

A: Our atmosphere contains 78% nitrogen gas. R: Nitrogen cannot be taken directly by plants and animals.​        

Explanation:

Earth's atmosphere contains a huge pool of nitrogen gas (N2). But this nitrogen is “unavailable” to plants, because the gaseous form cannot be used directly by plants without undergoing a transformation. To be used by plants, the N2 must be transformed through a process called nitrogen fixation

                   

                                           Thankyou...