Which of these statements best defines pyramid of energy?

Autotrophs include all the following EXCEPT

The process which reduces the nitrogen content of the soil is

Dry, horny scales in reptiles help them to

An example of a carnivorous plant is

The number of chromosomes in a gamete is represented by

The following can increase crop production EXCEPT

Which of the following enzymes requires acidic medium to function?

Which of the following is NOT a type of exoskeleton?