Question

what is the total no. of elements which are considered to be essential in plants
1. 23 elements
2. 17 elements
3. 30 elements
4. 21 elements ​

Answer 1

Answer:

20 elements

Explanation:

that are oxygen, carbon ,hydrogen are absorbed from air

and six macro nutrients are

nitrogen, phosphorous, potassium ,calcium ,magnesium and sulphur