Theory 1 what caused the giraffe neck to become longer

Which of the following is a pathogen that could not be identified by the original Koch’s postulates? Staphylococcus aureus Pseudomonas aeruginosa Human immunodeficiency virus Salmonella enterica serovar Typhimurium

Which is the best example of a response to an external stimulus? A) drinking water after a long run B) avoiding the sun by looking for food at night C) a hungry bear hunting for food D) falling asleep in the treetops of a forest

What occurs when people are exposed to substances that their bodies are sensitive to? histamines allergies antihistamines allergens

One organism benefits while the other is killed is called what?

What happens when new data call current scientific explanations into question? A. Scientists repeat the experiments to prove that the new data are unreliable. B.

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.