Fevers are caused by chemicals in the bloodstream called pyrogens. Pyrogens make their way to the brain's hypothalamus, which is in charge of regulating body temperature. When those pyrogens bind to certain receptors in the hypothalamus, the body temperature rises.

Explanation:

8 0

3 years ago

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1. The St. Lucie River drains Lake Okeechobee into the Atlantic Ocean.

Mrrafil [7]

Answer:

The St Lucie canal serves as an outlet of drainage for the Okeechobee Lake through the St Lucie River and out to the Atlantic Ocean.

Explanation:

The St. Lucie River is an estuary in Florida, in the United States. It was basically a freshwater system before an inlet was dug to provide access directly to the Atlantic Ocean.

Lake Okeechobee is the second largest freshwater lake in the United States. Water flows into the lake from various sources with Kissimmee River being the major source.

Because of the high levels of water in Lake Okeechobee, the St. Lucie canal was constructed in the 1920s. The St. Lucie canal provides a good outlet from the Okeechobee lake, through the St. Lucie River and out to the Atlantic Ocean.

3 0

3 years ago

Which of these statements about African slaves in America is true?

yKpoI14uk [10]

Answer: C.

Explanation:

Slaves did not have any rights

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4 years ago

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in humans, having freckles (F) is dominant to not having freckles (f). Having a cleft chin (C) is also dominant to not having a

Marianna [84]

9:3:3:1
that is the phenotype ratio
9/16 is gonna have freckles and cleft chin (dominant traits)
3/16 is gonna have freckles and no cleft chin
3/16 is gonna have cleft chin but no freckles
1/16 is gonna have no freckles and no cleft chin (recessive traits)
take R as freckles and dominant, r as recessive and no freckles
take Y as cleft chin dominant, y as no cleft chin recessive and substitute

7 0

3 years ago