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Vesna [10]
3 years ago
5

List two behavioral adaptations that Darwin observed.

Biology
1 answer:
harina [27]3 years ago
4 0
Closely related but different, distantly related but similar
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Hox genes are sometimes called "master switches". They have acquired this nickname because a single Hox gene will turn on (or of
Gwar [14]

Answer: B. False

Explanation:

“Hox” genes are a highly conserved group of genes, all of whose products are transcription factors bearing a specific domain (called a ”homeodomain”). The transcriptional activity of a large amount of genes relevant to embryonic development is controlled by regulatory sites which are able to bind to this domain. Changes in the transcriptional activity of even a single Hox gene may thus have dramatic downstream effects on the phenotype, as this will result in several further genes having their transcription either enhanced or suppressed.

4 0
3 years ago
What role does natural light exposure during the day play in improving sleep? it helps to regulate circadian rhythm. it discoura
yuradex [85]

Answer: It helps to regulate circadian rhythm

Exposure to natural light during the day helps regulate the circadian rhythm, which improves sleep pattern. The term circadian rhythm refers to our biochemical, physiological and behavioral processes in approximately 1 full day cycle. Circadian rhythm plays an important role in controlling when we fall asleep and when we wake up.

During day light, the secretion of melatonin or sleep hormone is suppress by melanopsin that keeps people awake and alert. Nevertheless, during nighttime, melanopsin stimulates the release of melatonin to signal sleeping time. Therefore, this hormone works the entire day and has direct effect on the circadian rhythm, which acts as a regulator of our biological clock.

 

 


6 0
3 years ago
Question 9 of 10
arsen [322]

Answer:

B

Explanation:

a cell does NOT destroy energy

6 0
3 years ago
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Describe the impact of human activities on natural resources;
Anastasy [175]

Answer:

As the human population has grown, the need for more land has caused an increase in the cutting down of forest lands for habitation and farming. The result has been an increase in soil erosion, an increase in species extinction from habitat loss, and a reduction of oxygen supplied by the trees, as well as lower amounts of carbon dioxide being removed from the atmosphere. Industrial and personal use of fossil fuels has dramatically increased the amount of air pollution in the atmosphere while systematically using up the supply of the non-renewable resources such as coal, oil and natural gas

Explanation: Hope this helps! ^^

Explanation:

5 0
3 years ago
PLEASE HELP.
GalinKa [24]
Groundwater

Is water that occupies pore space in the rock and soil layer beneath our feet, filling natural underground storage areas called aquifers, going on to feed into surface water sources like lakes, ponds, rivers, and even the ocean
5 0
3 years ago
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