Afamily has four children. they are all girls. what is the probability that the next child will be a boy?

100%

75%

50%

25%

Which beat describes the brain stem

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.