Answer:
1. Electrical impulses in the heart cause the muscle to contract.
2. To keep the blood flowing in only one direction
Explanation:
In the first question, the correct answer is ''Electrical impulses in the heart cause the muscle to contract''. Every muscle in our body contracts because of electrical impulses and this is also true for our hearts. Or any hearts in nature that we know of.
In the second question, the answer is ''To keep the blood flowing in only one direction''. We have those valves and without them, we wouldn't be able to function as we do.
It would be the last one 140/90
To prevent meningitis, routine vaccination in the United States is provided against bacteria like Haemophilus inflenzae.
Meningitis is a disease caused by various microorganisms. It causes swelling in the covering of the brain and the spinal cord. It may also cause inflammation the fluids present in both the regions. Its symptoms include high body temperature, cold hands and feet, pain in muscles and joints, fast breathing, etc.
Vaccination is the procedure of acquiring immunity for a disease by the administration of a vaccine. It provides the body with acquired immunity. They are generally specific for a particular type of disease.
To know more about meningitis, here
brainly.com/question/5171338
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Answer:
The hero of the epic tale The Odyssey forbids his sailors from eating lotus flowers when visiting the African land of the Lotus Eaters. Scholars believe that the lotus flowers contained "narcotic alkaloids"
Explanation:
It was false because the flower was investigated and it was found to contain Apomorphine and not narcotic alkaloids as earlier speculated by scholars.
Answer:
just ask them why they did that and if they are still mean to you, just don't reply because if they dont have a valid reason to do that (if its not a joke) then they're toxic and toxic ppl don't deserve you
