Answer:
In addition to dinitrogen, other inorganic and organic forms exist in the soil as well. It makes up 78 percent of the atmosphere but <u>cannot be used by plants. </u>It is taken into the soil by bacteria, some algae, lightning, and other means.
Explanation:
C. recycling
the rest are destroying the earth
Answer:
Eukaryotic cells are cells that contain a nucleus and organelles, and are enclosed by a plasma membrane. Organisms that have eukaryotic cells include protozoa, fungi, plants and animals.
(google)
A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle. We will shortly come to see that this is significantly different in eukaryotes. Prokaryotic DNA is found in the central part of the cell: a darkened region called the nucleoid (Figure 1).
(google)
Explanation:
Answer:
The Laura tried to grow micro-organisms in culture broth medium in Petri-plates but the microbial growth was not observed even on the fourth day of culture which could be due to:
1. Laura could have not provided the correct broth medium maintaining the with pH and salt concentrations.
2. Microorganisms did not get optimal growth conditions.
3. The bacterial source could have died after the collection which could have lysed after their death and thus no longer visible.
Answer:
Un virus no es una célula sino un organismo microscópico que invade las células de sus huéspedes.
Explanation:
