D.One year

Biology

1 answer:

Tatiana [17]2 years ago

6 0

B. It makes up the top two to eight inches of soil

This is wrong because topsoil is usually the top 5-10 inches.

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Lera25 [3.4K]

the area of the square is: 100

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Secretions from the highlighted glands ________. secretions from the highlighted glands ________. produce a layer of enzyme lade

aleksley [76]

<h3>Answer;</h3>

produce a layer of enzyme laden mucus that captures dirt and destroys inhaled bacteria

<h3>Explanation;</h3>

Secretions from the highlighted glands produce a layer of enzyme laden mucus that captures dirt and destroys inhaled bacteria 
During inhalation airt that contains dust particles or bacteria or other microorganisms may enter the air ways.
The layer of the airway covering the airways, is rich in antimicrobial compounds and mucins that are responsible for removal bacteria and other microorganisms from the airway .
This layer consist of mucus that traps, kills, and also inactivates the bacteria. It also contains periciliary fluid which keeps mucus at optimum distance from the underlying epithelia, to enhance bacteria clearance and the motility of cilia.

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In a study published in the journal Nature, scientists studied eight ponds in Florida: four that were populated by a species of

Reika [66]

Answer:

Explanation:

The rate of pollination in the field (near the pond with no fish) will decrease exponentially. Because, as the fish population is removed from that ecosystem, the population of dragonflies and larva increases without check because, fish feeds on the dragonflies larva and kept there population in check. Due to this, the population of bees and other pollinators population decline becuase, they are major food source of dragonflies.

Honeybees are the keystone species because it's absence will lead to major changes in the ecosystem.

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Two brothers have X‑linked red–green colorblind vision, and their parents have normal color vision. The first brother's karyotyp

Slav-nsk [51]

Answer:

The correct answer is option C, that is, in the mother in meiosis II.

Explanation:

A nondisjunction in meiosis I produce all the aneuploid gametes, while nondisjunction at meiosis II produces 50 percent aneuploid gametes and the 50 percent normal gametes comprising haploid number of chromosomes.

As it is mentioned that one of the brothers possess normal number of chromosomes (46), the mother encounters nondisjunction at meiosis II resulting in the formation of one n+1 gamete exhibiting two copies of X chromosome. Fertilization of this n+1 gamete with sperm results in the creation of zygote (47, XXY).

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Ali has an unknown bottle of liquid and wants to test if the solution is acidic. What is the color of the litmus paper he should

nika2105 [10]

He should use a blue litmus paper to test if it’s acidic because if the solution is acidic then the blue litmus will turn red

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