The bacteria can chemically combine nitrogen with hydrogen to form ammonia (NH3). This combining process is called nitrogen fixation. Which group of organisms chemically combines nitrogen with hydrogen in a process called nitrogen fixation?

birds and reptiles

all mammals

bacteria

only aquatic plants

bacteria

Explanation:

they are decomposers. they decompose dead material by fixing nitrogen

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

there is none because earth is stationary and flat.