If a person weighs 80kg, how many mg of H2S would it take to cause eye

xirritation to begin?

In peas, the allele for yellow seeds (Y) is dominant to the allele for green seeds (y). What would be the genotype and phenotype ratios of offspring from a cross between Yy (heterozygous) and yy (homozygous recessive) individuals? a.

Is the air we breathe an element, a mixture or a compound

Suppose that an adult black bear adds 50 pounds of fat in order to survive while hibernating through the winter. how much glycogen would a bear have to add to achieve a similar feat?

Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. true or false?

Which of the following is true of a semiconservative model of replication? A. Each newly synthesized double helix of DNA contains one new strand and one old strand. B.

Ken experienced a blow to the back of the head, which resulted in problems coordinating his balance and his sensory input. which part of ken's brain has most likely been damaged? reticular formation

As a period of drought begins, how would infiltration and condensation change initially? What would happen to these two processes as the drought continues over time?

According to the law of superposition, how are sedimentary rock layers deposited? with the oldest on top with the youngest on top in horizontal beds of the same age at the same time and later folded by tectonics

Clouds have many effect, such as

A woman with ab blood type and a man with blood type o have three children, one of whom is adopted. the blood types of the children are a, b, and o. what is the blood type of the adopted child?