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ryzh [129]
3 years ago
15

Due to hunting, the population of Northern elephant seals was reduced to 20 individuals at the end of the 19th century. Since th

en, their population has since rebounded to over 30,000.
What is the most likely long-term effect of hunting on the elephant seal population?

a) The population is more likely to survive disease.
b) The population contains high allelic diversity.
c) Individuals are genetically similar to each other.
d) The population has allele frequencies similar to those in the original population.
Biology
1 answer:
anygoal [31]3 years ago
8 0

Answer:

Option C

Explanation:

Long term hunting has led to following  

a) Reduction in population size and hence the gene pool

b) Causation of Bottleneck effect

Due to above factors, the remaining population of Northern elephant seals does not represent the original genetic problem.  

Due to this restriction in mating and genetic variation shall prevail pertaining to reduced gene pool.  

Due to continuous hunting, the gene pool will further shrink, leading to genetic similarity among the organism

Option C is correct

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While cooked rice meals are associated with the vomiting ailment, cooked veggies, animal products, and milk are frequently linked to the diarrhea ailment (rice pudding and fried rice). The easiest way to avoid it is to regulate the temperature and time.

<h3>What is meant by "foodborne disease"?</h3>

Foodborne illness is brought on by consuming contaminated foods or beverages. Foodborne infections can result from a wide variety of pathogens or disease-causing germs contaminating foods. Foodborne illnesses are typically caused by bacterial, viral, and parasite infections.

<h3>What are the 5 major foodborne illnesses?</h3>
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<h3>What brings about food-borne illness?</h3>

Foodborne illness causes

Bacteria, viruses, and parasites are biological risks. Most foodborne infections are caused by bacteria and viruses. The greatest danger to food safety is posed by biological risks. They may be a result of improper handling (such as using excessive time or temperature) or inherent in the product.

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4 0
2 years ago
Which type of epithelium is composed of multiple layers, including an apical layer containing tall, slender cells?
Mademuasel [1]

The question is incomplete as it does not have the options which are:

  • Simple squamous
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  • Pseudostratified squamous
  • Stratified squamous
  • Stratified columnar

Answer:

Stratified columnar

Explanation:

Epithelial tissue is the tissue formed by the cells which form a layer of cell and lines the lumen of the organ and also covers the organs. The epithelial tissue can be classified based on the number of layer and shape of the cell.

In the given question, the shape of the cell is slender and are tall therefore are called columnar. The cells form more than one layer or multiple layers therefore form stratified layers.

Therefore,  the epithelial tissue formed by these slender shaped multiple layers is known as the stratified columnar layer. The stratified columnar is present in the respiratory tract and the digestive tract.

Thus,  Stratified columnar is the correct answer.

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3 years ago
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3 years ago
Calculate the molarity of 0.75 L of a solution containing 0.83 g of dissolved KCI. A 0.015 M B 0.75 M C 1.1 M D 6.2​
marissa [1.9K]

Answer:

A 0.015M

Explanation:

Molarity, which refers to the molar concentration of a solution, can be calculated using the formula:

Molarity (M) = mole (n) / volume (L)

Based on the information provided in this question, the solution contains 0.83 g of dissolved KCI.

We can calculate the number of moles of KCl in the solution by using the formula:

Mole = mass ÷ molar mass

Where atomic mass of; K = 39, Cl = 35.5

Molar Mass of KCl = 39 + 35.5

= 74.5g/mol.

Mole = 0.83g/74.5g/mol.

mole = 0.01114

Approximately, n = 0.011mol

Hence, molarity = 0.011mol/0.75L

Molarity = 0.0146

Molarity = 0.015M

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