Answer:
a. 100% of the offspring will have the Bb genotype
Explanation:
In a BB x bb cross, the one with BB genotype produces B gamete, while the other only produces b gamete.
Therefore, the zygote in this cross has Bb genotype.
The answer is A. nuclear energy
the other answer choices are all renewable sources of energy.
hope this helps
A. until both objects reach the same temperature