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slava [35]
2 years ago
5

About 80% of the air in our atmosphere is made of nitrogen. All living things need nitrogen; it is a key element in DNA, RNA, an

d proteins. Your body gets the nitrogen it needs from food. But how does the nitrogen get from the air into the food that we eat? In order for plants and animals to be able to use nitrogen, N2 gas must first be converted to more a chemically available form. Review the picture of the nitrogen cycle.
In order for plants and animals to be able to use nitrogen, N2 gas must first be converted to more a chemically available form. Review the picture of the nitrogen cycle. One type of organism is responsible for "fixing" nitrogen so other organisms can use the element. What organism is this?

A) fungi

B) plants

C) animals

D) bacteria

Biology
2 answers:
Ilya [14]2 years ago
7 0
The answer is D bacteria ,this because in our body it does tireless job in breaking food and disseminating it to the areas that needed it in our body
11111nata11111 [884]2 years ago
6 0
D) Bacteria, Is the answer
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Australopithecina or Hominina is a subtribe in the tribe Hominini. The members of the subtribe are generally Australopithecus (cladistically including the genera Homo, Paranthropus,[2] and Kenyanthropus), and it typically includes the earlier Ardipithecus, Orrorin, Sahelanthropus, and Graecopithecus. All these related species are now sometimes collectively termed australopithecines or homininians.[3][4] They are the extinct, close relatives of humans and, with the extant genus Homo, comprise the human clade. Members of the human clade, i.e. the Hominini after the split from the chimpanzees, are now called Hominina[5] (see Hominidae; terms "hominids" and hominins).

While none of the groups normally directly assigned to this group survived, the australopithecines do not appear to be literally extinct (in the sense of having no living descendants) as the genera Kenyanthropus, Paranthropus and Homo probably emerged as sister of a late Australopithecus species such as A. africanus and/or A. sediba.

The terms australopithecine, et al., come from a former classification as members of a distinct subfamily, the Australopithecinae.[6] Members of Australopithecus are sometimes referred to as the "gracile australopithecines", while Paranthropus are called the "robust australopithecines".[7][8]

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