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Nataly [62]
2 years ago
15

3. When are moths most active? Why?

Biology
1 answer:
Vikki [24]2 years ago
3 0

Answer:

Moths are active at night because they are nocturnal.

Explanation:

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Age-associated changes in the immune system, also known as _______________________, are thought to be responsible for the increa
wariber [46]

Answer:

The correct answer is: Immunosenescence.

Explanation:

  • Immunosenescence can be defined as a biological age-related phenomenon due to which the cells of the immune system are unable to function efficiently with increase in age.
  • As a result of this the aged individuals becomes susceptible to various infections and diseases.
  • This happens because of the following reasons:
  1. The immune cells are formed from the progenitor cells called the Hematopoetic Stem Cells (HSCs) which are abundantly found in the bone marrow. These cells have the capacity of self-renewal and also differentiation into various types of immune cells. Due to aging, these cells accumulate large number of Reactive Oxygen Species (ROS) that that causes oxidative damage to the DNA. Also, with age the telomere (the repititive DNA sequence located at the chromosome terminal that protects the end of the chromosome from undergoing recombination or fusion with other chromosomes) length shortens resulting in the generation of damage in DNA. All these reduces the self renewal and differentiation capacity of these cells.
  2. Other cells of the immune system like, the white blood cells, anti-body producing B-cells, cytotoxicity inducing T-cells, natural killer cells also accumulate similar DNA degrading components. This reduces their life time and also the efficiency of their activity.
5 0
3 years ago
HELP ON THIS PLEASEEEE!!
NeX [460]

Answer:

Abrasion is physical weathering caused by water, wind and gravity. The coastal regions are affected by abrasion due to large volumes of water and increased winds. This can become more severe especially with storms that hit coastal regions.

Explanation:

HMU

8 0
3 years ago
What sexual selection does the Cuban greater funnel-eared bat (Natalus Primus) have?
Zinaida [17]
The answer is : <span>There seems to be no evidence of </span>sexual dimorphism (sexes alike). The Cuban greater funnel-eared bat (Natalus Primus) have no evidence sexual dimorphism.  Meaning they are <span>monomorphic.</span>
6 0
3 years ago
Which city had warmer summers (meteorological summer-June,July,August)?
jarptica [38.1K]
July is the warmest summer it has been proven by me and my fellow class mates.
6 0
3 years ago
Most food chains have no more than six organisms. why is there a limit to the number of links in a food chain?
hammer [34]
The answer is B.)  animals at the end of the food chain would not get enough food to stay alive.
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3 years ago
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