If a couple had two girls, what is the chance that their next baby will be a girl?

25%

50%

100%

1/8

what are two ways that scientists have studied space debris as a possible origin of organic compounds on Earth? What did they discover in each case? (2) What is the evidence that the first life may have evolved around geothermal vents?

What types of organisms require chemical reactions inside their cells in order to survive? A:Bacteria B. Only Mammals C. All living organisms.

Do people perform better on exams when they wear their favorite color?

What is the goal of restoration ecology

Under ideal conditions, how do allele frequencies change over time? A. The allele frequency reaches over time. B. The allele eventually reach a 50/50 balance. C. The frequency of the dominant allele increases over time. D.

Forces that uplift and wear down the Earth's surface?

What it a dilute solution

Is Chitin a Carbohydrate or a Protein?

You want to compare the evolutionary relationships between four species of birds, which of the following would be most useful? Question 1 options: A) nesting behaviors B) DNA sequences C) color of feathers D) patterns of migration

Two hypotheses about how life supporting molecules appeared on earth