The respiratory system contains which of the following structures and organs? A. blood, blood vessels, heart B. tonsils, thymus, spleen, red bone marrow C. lymph nodes, lymph vessels D. lungs, respiratory passages, diaphragm

When a person receives a vaccine, his or her body a. receives antibodies against a specific pathogen. b. creates plasma cells that can produce antibodies against the specific pathogen. c. creates antigens to fight the specific pathogen. d.

What are the health risks of eating too much salt, sugar and saturated fat? Include sources that you used (or just say if you used ur brain)

Is there a relationship between crystal size and intrusive rocks

Which of the following is an example of a homozygous dominant allele? wr Rr RR Rw

You are feeling really yucky. You are very warm and are beginning to sweat. you take your temperature and it says that it is 102 F. What are the 2 types of response? Why does your body respond this way (be specific) ?

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.