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lana [24]
3 years ago
12

Saint Bernards and Chihuahuas (two breeds of domestic dogs) cannot mate normally owing to great difference in size. Thus they ar

e reproductively isolated to some extent. What type of isolating mechanism is operating here? * o developmental O postzygotic prezygotic O geographic​
Biology
1 answer:
maria [59]3 years ago
3 0

Answer:

AU9NJ-BLVHV-TCLJS-54YTB

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A goox conductor of heat is
Leokris [45]

Answer:

The answer is B

Explanation:

8 0
3 years ago
Innate immunity________.
labwork [276]

Answer:

The answer is A.

Explanation:

Since only 1 of the options is wrong, i assume you are looking for that one.

Two types of immunity systems, innate immunity and adaptive immunity. Adaptive immunity is formed when it is exposed to a harmful substance, vaccines for example create adaptive immunity.

Innate immunity is present at birth which consists our skin protects us physically, chemical substances in our blood that protect us from bacteria and infections and also our blood cells such as T cells.

Since innate immunity forms one of the first lines of defense in our immune system and is the first to respond to a threat in a few hours down to as little as minutes, it is not slower than adaptive immunity in its response to infections and pathogens.

I hope this answer helps.

4 0
3 years ago
Why is the solar system considered a natural system? look to the word nature for clues.
Burka [1]
The solar system is considered a natural system because it was made and controlled by natural forces, meaning, it was never influenced with human creations. It is considered as one of the products of the phenomenon of the physical world. Hope this answer helps you.
6 0
3 years ago
Read 2 more answers
If a plant were to absorb a substance that readily reacts with carbon dioxide in the stroma, the dark reactions would be most li
Assoli18 [71]
The right answer is the dark reaction would stop happening.
The Calvin cycle (or dark reactions, independent of the sunlight) makes it possible to manufacture glucose, an energy molecule, from carbon dioxide. This is called carbon fixation.There are three reactions of this cycle take place in the stroma of chloroplasts: the first of which is the fixation of carbon dioxide. which is a limiting step in this cycle.If a substance other than the components of the dark reactions absorbs and uses carbon dioxide, the carbon cycle will not be able to occur for lack of one of these ingredients which is the CO2.
7 0
3 years ago
In carrier pigeons there is a rare inherited condition that causes the death of the chicks before hatching. In order for this di
blondinia [14]

Answer:

1. are heterozygous for the disease.

Explanation:

<em>Since the disease causes the death of chicks before hatching, it means that those with the disease cannot be found in the population. In order for the allele of the disease to be passed from generation to generation, there must be parent birds that are carrying the disease in heterozygous state.</em>

Option 1 is the correct option.

7 0
3 years ago
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