Which of these would be a valid scientific hypothesis? human history is determined by a series of supernatural events. humans should in the conservation of other animal species. humans are controlled by forces beyond our understanding. humans and bacteria share a common genetic code?

The correct answer is: humans and bacteria share a common genetic code.

This could be a valid scientific hypothesis because it is testable.

To be valid scientific hypothesis it has to  has to be something that can be supported or refuted through experiments or observation.  

there are 35 white marbles

step-by-step explanation:

y- yellow marbles

4y + 5 = 45

subtract 5 from both sides

4y = 40

divide for from both sides

y = 10

plug in 10 to get 40 yellow marbles then subtract by 5 to get 35 marbles

thus there are only 10 yellow marbles

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.