Answer: A
Explanation:
They need to be inherent through Mom and Dad not randomly.
Answer:
body size
more
circulatory system
egg deposition
Explanation:
Because of their large <em>body size</em> , ancestral amphibians likely faced challenges supporting themselves out of the aquatic environment.
Although there was far <em>more</em> oxygen available to gills in air than in water, the delicate structure of gills couldn't be supported in the terrestrial environment.
The costs of locomotion on land and greater oxygen demand from enlarged muscles led to modifications of the heart and <em>circulatory system</em>
These early amphibians could not venture too far away from water because <em>egg deposition</em> was restricted to moist environments.
Answer:
they are near the equator
Explanation:
closest to the sun
Monogamous pine voles and polygynous montane voles are different in terms of the parental care.
<h3>
Monogamous Pine voles vs Polygynous Montane voles ;</h3>
Monogamous Pine vole do extended biparental care, whereas Polygamous Montane voles do not form long-lasting pair bonds and they engage in extended biparental care.
Monogamous species has the prairie vole, vasopressin facilitates affiliation, pair-bonding, and paternal care.
Polygamous Montane vole's vasopressin fails to influence social behavior.
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Answer:
Exposure to the disease
Explanation:
Before vaccines, the only way to develop immunity to a disease was to be exposed to the disease-causing pathogen without being harmed by it. A good example of this is smallpox, which was also the first vaccine developed. It was noticed that milk maids weren't catching and dying from small pox like everyone else, because they had been exposed to cowpox. This premise was used to create the first vaccine.
Vaccines give you immunity by injecting you with a small amount of a (usually inactive) pathogen. inside your body. This means your immune system produces antibodies against it. Similar to what happened with the milkmaids.
