Examine the graph above, which plots the average surface temperature of the planets by their distance from the Sun. The data point for Earth has been circled. What would happen if Earth were located at the position marked
by the star?
A. The conditions on Earth would be suitable for life because the temperatures would not change.
B. The conditions on Earth would be too cold to support life as we know it on Earth.
C. The conditions on Earth would be exactly the same.
D. The conditions on Earth would not be suitable for life because the temperatures would be too high.

i think it is dna, i'm not totally sure but i think it might be.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.