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dmitriy555 [2]
3 years ago
5

In a healthy human, the typical life span of a red blood cell is

Biology
1 answer:
iogann1982 [59]3 years ago
8 0
Human red blood cells are formed mainly in the bone marrow and are believed to have an average life span of approximately 120 days<span>.</span>
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What structure do grass frogs use to detect sound waves​
stiv31 [10]

Answer:

The tympanic membrane and stapes of the bullfrog can be driven by airborne sound over a wide frequency range, with a broad maximum in their velocity amplitudes between 0.4 and 2 kHz (Mason and Narins, 2002a).

4 0
3 years ago
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Some animals shiver as a natural, involuntary response to their environment. Shivering generates heat. This is an example of whi
anyanavicka [17]

Answer: The answer is C!!! :D maintaining homeostasis by regulating the body's temp!

Explanation:

Shivering as a natural, involuntary response to generate heat is an example of  maintaining homeostasis by regulating body temperature.

Homeostasis refers to the maintenance of a relatively constant body environment. The normal range of operation of the body system is known as the setpoint.

When the setpoint temperature for some animals is breached, a negative feedback mechanism is used to return it to the setpoint. Shivering to generate heat is a response to a cold environment when the body's temperature is about to drop below the setpoint.

The oppositeis sweating. Sweating causes cooling and comes in response to when the setpoint temperature is exceeded.

Hopes this helps happy early Christmas!!!! :D

8 0
2 years ago
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Which discovery in the 1800s lead to the development of germ theory
bogdanovich [222]

<u>Answer:</u>

Discovery of vaccine for smallpox, viruses and actual organisms that cause many diseases lead to the development of Germ Theory.

<u>Explanation:</u>

  • Theory was the 'predominant theory' of 'disease transmission' before germ theory but it is no longer accepted as a 'scientific theory' of diseases.
  • 'Formal and reliable experiments' on germs and diseases relationship were 'conducted by Louis Pasteur'.
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8 0
3 years ago
Hello, please help, see attached photo :) thanks
Dmitry [639]

Answer:

a. Parents AA x Aa

b.

                     A               A

A                   AA             AA

a                   Aa              Aa

c. 50%

Explanation:

a. Parents AA x Aa

b.

                     A               A

A                   AA             AA

a                   Aa              Aa

c. 50%

5 0
2 years ago
Earth's magnetic field is created by the (2 points)
Svet_ta [14]
Your answer is gravitational forces
3 0
3 years ago
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