1. Blackberries on a tree do not ripen simultaneously, why? 2. What feature of trees gives them a particular advantage when dispersing seeds by air?

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

sorry, is there a picture? i do not see any arrows.

wut? unius0123 wut?