Human eggs and sperm each contain 23 chromosomes. Explain the significance of this during fertilisation in terms of chromosome numbers.

What happens to the amount of water in the high plains aquifer over time

The strength of gravitational force is dependent on the masses of and distance between two objects. True False

In what way does DNA look like a book

Which of these situations best shows irony? a. a school nurse misses work because she is not feeling well. b. a school nurse sends five sick students home one afternoon. c. a school nurse is married to one of the teachers. d.

The blood type of Tamari's blood type is A + and that of her mother is B+. However, Tamari's blood type is AB+. What is the correct explanation for this.

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.