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4 years ago

Their differences may eventually stop the separated squirrels from breeding with one another this is an example of

1 answer:

8 0

Their differences may eventually stop the separated squirrels from breeding with one another this is an example of an Allopatric speciation

Explanation:

In allopatric speciation, species from the same population evolve some different characters due to the differences in geographical locations.

In this scenario, the species become reproductively isolated and diverge.

The mating times of the squirrel have changed due to the environmental changes.

They no longer interbreed and hence no viable offspring thus sexually isolated from each other.

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Which descriptions apply to Mendel's pea plant experiments? Select three options.

Rina8888 [55]

Answer:

Used cross breeding to purposely breed plants. Studied a variety of pea plant traits. studied several generations of pea plants.

Explanation:

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3 years ago

Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of

Len [333]

Answer:

A. It decreases the activation energy needed to start the reaction

Explanation:

Organic catalyst which speed up the rate of organic chemical reaction is living cells are called enzymes.They have specific reaction site called active sites.This must be in prefect shape with the substrate for the organic chemical reaction to take place

When this occurs the minimum amount of energy of reaction to activate or stimulate the the atoms and molecules of the substrate to undergo chemical reaction is lowered.This energy of reaction is celled activation energy.

Catalase thought its active sites lowers the activation energy so that the molecules of H2O2 could break down to C02 and H2 faster,thereby reducing the time for theses product to form.The is the general roles of enzyme.To increase the rate of chemical reaction,by reducing the activation energy.

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3 years ago

20 PTS AND BRAINLEST Match the astronomical object to its description. \

krok68 [10]

A. Venus
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D. Uranus

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3 years ago

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Humoral immunity involves ________ cells and ___________

jarptica [38.1K]

Answer:

Humoral immunity involves B cells and recognize antigens or pathogens in the lymph or blood.

Explanation:

Humoral immunity is defined as the immunity which is mediated by several macromolecules presnet in the extracellular fluids such as antibodies, certain antimicrobial peptides, and complement proteins.

Humoral immunity allows to distinguishes two groups of foreign substances. it involves B cells and recognize antigens or pathogens in the lymph or blood.

Humoral immunity begins when an antigens bind to B cells. Interleukins or helper T cells provides a secondary signal to the B cells that activates a B cell and allows B cell proliferation. which roduces produce plasma cells. The plasma cell then produces antibodies which are identical to the specific antigen. The antibodies are the released and circulate through the body, binding to antigens. B cells the further produces memory cellss for future immunity.

So, Humoral immunity involves B cells and recognize antigens or pathogens in the lymph or blood.

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4 years ago

Yellowfin tuna, or Thunnus albacores, are large sport fish that are found in tropical and subtropical waters around the world. T

Ber [7]

The correct answer is 'secondary consumer’. This is because the yellowfin tuna eats herbivorous fish (these are primary consumers - they only eat plants, which are producers) and take refuge from predators. This shows they are not tertiary consumers, as tertiary consumers are at the top of the food chain.

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3 years ago

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