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aksik [14]
2 years ago
12

What could cause a nautral decrease in the number of primary consumers in a food chain

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

Answer:

Weather, Death, Lack of typical food, Moving to different places

Explanation:

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How do guard cells operate to allow leaf gas exchange
WINSTONCH [101]

In order for plants to produce energy and maintain cellular function, their cells undergo the highly intricate process of photosynthesis. Critical in this process is the stoma. Stomata (multiple stoma) are located on the outermost cellular layer of leaves, stems, and other plant parts. An open stoma facilitates the process of photosynthesis in three ways. First, it allows light to enter the intercellular matter and trigger the process. Second, it allows for the uptake of carbon dioxide, a key chemical in producing plant energy. Third, it allows for oxygen to be expelled into the outside environment, a byproduct of photosynthesis that is no longer needed by the cell.


8 0
3 years ago
Read 2 more answers
The reduction of friction between the parietal and visceral surfaces of an internal cavity is the function of
eduard

Answer:

The reduction of friction between the parietal and visceral surfaces of an internal cavity is the function of serous fluid.

Explanation:

Between the parietal layer and visceral layer of an internal cavity there is serous fluid that reduces the friction between these two surfaces and allows an easier movement of the parietal and visceral layers. The serous fluid is produced by serous glands that are in the parietal and visceral membrane.

3 0
3 years ago
Which of the following explains how the processes involved in meiosis increase variation in a species? A. The gametes of asexual
spin [16.1K]
The answer would be D. The gametes of sexually-reproducing organisms reshuffle through crossing over and independent assortment during meiosis, creating genetic variation in their offspring.

Tip: remember  mitosis (my toes has nothing to do with sex) so meiosis is the opposite of it. 
6 0
3 years ago
There is more Biodiversity in the costal plains ecoregion than in the mountains basin ecoregion due to:
TEA [102]
Seeing as it is by the coast, the abundance of biodiversity will likely be due to more precipitation. It’s unlikely that colder term-erasures would lead to biodiversity, nor would less annual precipitation- life generally thrives on warmth and water
3 0
3 years ago
Consider a simple scenario: A bird species lives on a tiny island in the Pacific Ocean. Due to a single mutation some individual
nordsb [41]

Answer:

Reproductive barrier ⇒ isolation mechanism ⇒ seasonal or temporal isolation.

Explanation:

Reproductive barriers are isolation mechanisms that prevent mating between two or more species. The prezygotic mechanism avoids fertilization between individuals of different species, and the postzygotic mechanism avoids the zygote to develop and reach the adult stage.  

Among the prezygotic mechanisms, we might find behavioral isolation, seasonal or temporal isolation, sexual isolation, gamete incompatibility.

Seasonal or temporal isolation occurs when individuals of different species occupy the same area, have the same reproductive behavior, and their gametes are compatible, but they do not get to mate because their reproductive seasons differ.

In the exposed example, after the speciation process, both bird species living together are not capable of mating because one of the species mates in the spring and the other one breeds in fall.

8 0
3 years ago
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