The data table below compares four characteristics of the inner planets. Planets

Characteristic Mercury Venus Earth Mars

Temperature -184°C to
527°C

-450°C to
477°C

-89°C to
58°C

-143°C to
17°C

Mass
(Kilograms)
3.30 x 1023
4.87 x 1024
5.97 x 1024
6.42 x 1023
Diameter
(kilometers)
4,854
12,112
12,751
6,788
Distance from sun
(millions of kilometers)
58
108
150
228
Which of these statements best explain why Earth is the only inner planet that supports life?
Select one:
The other planets have too much mass.
The other planets are too close to the sun.
The other planets are either too hot to too cold.
The other planets are either too big or too small.

the answer is a or when it says crossing over

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!

layer 3 is younger than layer 6.