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kow [346]
3 years ago
8

What type of nervous system do mollusks have

Biology
1 answer:
Mnenie [13.5K]3 years ago
8 0
They have two pairs of main nerve cords organized around a number of paired ganglia. while they don't have a "true brain"-- they have somewhat of a nervous system, composed of the two, or three pairs of nerve cords contained in the visceral mass.
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"A man has a mutation in a mitochondrial gene encoding a subunit of the ATP synthase complex. The mutation leads to a defective
EastWind [94]

Answer:

0%

Explanation:

  • Mitochondria is a cellular organelle that is used for the purpose of providing energy to the cell.
  • This cellular organelle has a special property that it has its own DNA and hence, the mitochondrial DNA is transmitted separately from the nuclear DNA, therefore any mutation arising in the mitochondrial DNA will only be inherited if the progeny receives the mitochondria with the mutated mitochondrial DNA.
  • Further, the mitochondrial inheritance in humans has a special property that only the mother transmits the organelle to the progeny.
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3 years ago
The combination of dominant tree species in Eastern forests will likely change in the future. Some forest types,
Katen [24]

Answer:

<em>C)  Eat locally-produced and organic food; cur meat and dairy consumption.</em>

Explanation:

Eating organic food will be of no help because humans do not usually use forest trees as food resources. And hence, it will be of no help to stop the carbon dioxide emissions. Hence, option C will be of no help.

The consumption of green products will lead to lesser production of carbon dioxide and hence can be helpful. Using alternate energy sources which are not carbon based will also help to reduce the amount of carbon dioxide. If lands are restored then, these trees will not change over time. Hence, option A, B and D are helpful for  no substantial change in the tree species over time.

8 0
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Nitrogen makes up most of the Earth's atmosphere in the form of N2, a gas that does not easily undergo chemical reactions. What
Gre4nikov [31]

Answer:

it must be denitrified.

Explanation:

Decomposition makes the nitrogen available to go through nitrification again. For nitrogen to return to the atmosphere in its gaseous N2 form,

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RNA (: stranded RNA virus that infects specifically the parasitic protozoan G. lamblia. Among the many collected strains of G.
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alex41 [277]

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Explanation:

The r-selected species (r-strategists) are those species in which their populations oscillate near the carrying capacity, i.e., the maximum population size sustained by a particular environment. These species are generally located in low-quality (less competitive) ecological niches and produce many offsprings that grow rapidly and have low chances of surviving to adulthood. Some examples of r-strategists include amphibians, fish, small mammals, etc. Conversely, K-selected species have more stable populations and produce a low amount of offspring (e.g., large mammals such as elephants).

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