Jack. A signpost is a non-living thing and non living things do not grow. Sam is an adult and he has stopped growing already. Jack is a child and will continue growing the next few years.
Answer: Many are DECIDUOUS TREES that lose their leaves in fall, but the broad-leaved trees of a tropical rain forest are evergreen. The mass of leaves of adjacent trees form a CANOPY.
Explanation: I hope this helps, I am stuck on the same question too.
I think its option b, may carry out nitrogen fixation.