How does nitrogen get into the food web?
how does an elephant get its source of nitrogen to form its dna or proteins (like collagen)?
how does a lion get its source of nitrogen to form its dna or proteins?
3. draw the lion into the nitrogen cycle diagram on the previous page. be sure to draw appropriate arrows

The question is incomplete. The choices for the question are:

Which of the following groups contain organism that have tissues and organ systems?

A. protists

B. prokaryotes

C. bacteria

D. eukaryotes

The correct option is D. eukaryotes

Explanation:

Eukaryotes can be described as multicellular organisms made up of complex structures.

Different cells in eukaryotes work together to make tissues. Tissues work together to make organs of the body. Organs work together to form organ systems. The organ systems combine to form multicellular organisms.

Other options are wrong because bacteria and other prokaryotes are unicellular i.e made up of a single cell and do not have complex systems like the eukaryotes.