The atomic number of krypton (Kr) is 36, and its mass number is 84. How many neutrons does it have?

A) 18

B) 36

C) 48

D) 72

An ecosystem with wet soil, willow trees, and orchids is likely a. a marsh. c. a forest. b. a swamp. d. a pond.

Why a person with aa alleles has very pale skin and hair color?

Indicate whether the statements below are true or false. 1. The chemistry of life is carried out and coordinated primarily by the action of small molecules. 2. Carbon-based compounds make up the vast majority of molecules found in cells. 3.

If foxes arrive in an area and catch and eat a large number of rabbits the foxes are causing an increase of the birth rate of the rabbit population true or false

Consider the case where a mutation occurs that disrupts translation in a single human mitochondrion found in the oocyte participating in fertilization. What is the likely impact of this mutation on the offspring arising from this oocyte

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.