Which of the following statements is a scientific claim?
a.
the mass of the universe is much greater than current models predict; it is not possible to explain this inconsistency.
b.
planet earth is abundant in water, but there is no way to scientifically determine from where earth's water originated.
c.
earth is shaped like a sphere even if not all of the scientific observations related to its shape support this idea.
d.
the early solar system had large amounts of water; so, the oldest objects in the solar system should also be abundant in water.

Which of the following scenarios is an example of the bottleneck effect? answers a in south africa, much of the afrikaner population is descended from a small number of dutch colonists. in this population, this is an unusually high frequency of pseudoxanthoma elasticum (pxe), an elastic tissue disorder. b four white-tailed deer are introduced to a park in finland. thirty years after their introduction scientists compare the genes in the population and find that there is no variation. c during the industrial revolution, london's air became filled with soot. as a result, birds started eating more of the lighter moths because they were easier to spot than their darker counterparts. over time, the moth population changed so that there were more darker moths than lighter ones. d 10% of the population of american alligators in an area have the recessive trait albinism. a massive flood results in the death of 80% of the population. of the remaining population, 60% have the recessive trait of albinism.

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes

Nh3 +02-no + h20 is unbalanced what is the balanced equation