No they cant be mechanical because then something would have to generate their rays through the inventing of a machine.
Answer:
C
Explanation:
Mutations occur oftenly in organisms because it is seen as natural. Not all generations will give offsprings with perfect traits, They tend to have either 50/50 inherited traits from each parent of 100% off a parent if it was asexual reproduction.
I believe the answer is 172,800,000,000 per day (24 hours)
How I Got That Answer:
I calculated 2 million times 60
=120000000 per minute
Then I calculated that times 60 again
=7200000000 per hour
Then I calculated that times 24
=172800000000 per day
