I had this question when I took a biology class cuz I chose to study a lot on paleontology :)
It’s that there’s fossils of animals in geological strata that are older than the Cambrian explosion.
Some fossils from the ediacaran period have been discovered in layers aged to the Cambrian
Answer:
a) 
b) 
c) 
d) 
e) 
Explanation:
When two heterozygous plants with genotype Bb are crossed, following offspring are produced
Bb * Bb
BB, Bb, Bb, bb
so the probability of blue offspring is
and the probability of white offspring is 
a) Probability of all 4 peas as blue

b) Probability of 3 blue and 1 white

c) Probability of 2 blue and 2 white

d) Probability of 1 blue and 3 white

e) Probability of all white

A substance that provides humans with their main source of energy would be; food.