Answer:
Explanation:
friction between two rock surfaces grinding away minerals.
Answer:
Properly equipped according to the environment.
Explanation:
Natural selection will kill off those who cannot survive in a given environment
The correct answer to the question stated above is the first option: <span>an instinctive behavior was tied to a different stimulus.
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Pavlov's experiment was a typical case of classical conditioning because an instinctive behavior was tied to a different stimulus.
Answer:
See the eplanation below, please.
Explanation:
In sickle cell anemia, hemoglobin has the form of rigid bars inside the red blood cells, causing them to adopt sickle shapes being not very flexible. These cells can block blood vessels, stopping the flow, causing oxygen to not reach the tissues.
The cause of this anemia is due to a genetic mutation (there is a substitution of thymine for adenine in the beta globin gene, located on chromosome 11), generating Hemoglobin S with a decrease in oxygen binding.
Answer:
saliva is slightly acidic and helps break the food down it also allows it to have a easier time going down your throat
Explanation:
saliva is acidic it coats the food in itself once it in your mouth Wich makes it easier to chew and swallow
