Which of these is not needed by living organisms? water
air
energy
gravity
space

Gravity.

Explanation:

Without air, living organisms would suffocate and die.

Without water, living organisms would dehydrate and die.

Without energy, living organisms would die instantly.

Without space, living organisms would be squished together and die.

The only logical answer left is gravity.

geno- 25%BB 50%Bb 25%bb

Pheno: black, kermode(white)

Explanation: the top of the punnett square should have Bb and the side should have Bb.

Square one should be BB square two should be Bb square three should be Bb and square 4 should be bb * note* the percentages should add up to 100 and use percentages of 25