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MissTica
3 years ago
7

Which force can affect an object without direct physical contact

Biology
2 answers:
Sonja [21]3 years ago
8 0
1. gravitational force
2. electrostatic force
3. magnetic force
4. nuclear force
Ksenya-84 [330]3 years ago
4 0
1. gravitational force
2. electrostatic force
3. magnetic force
4. nuclear force



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A population characterized by the largest number of people in the post-reproductive age group on a population pyramid will tend
SIZIF [17.4K]

The number post-reproductive age group will decline in number in a population pyramid.

<h3>What is a population?</h3>

A population is a group of organisms of the same same specie living in a defined area of a given habitat.

A population pyramid shows the number of organisms of age groups in a population.

The post-productive age group is characterized by individuals that are too old to have children.

Since they are too old to have children, the post-reproductive age group will decline in number.

Learn more about population at: brainly.com/question/25896797

8 0
2 years ago
Write a short note on malaria as a disease its causative, target organs symptoms and control.
anastassius [24]

Answer:

Explanation:Malaria is a life-threatening disease. It’s typically transmitted through the bite of an infected Anopheles mosquito. Infected mosquitoes carry the Plasmodium parasite. When this mosquito bites you, the parasite is released into your bloodstream.

Once the parasites are inside your body, they travel to the liver, where they mature. After several days, the mature parasites enter the bloodstream and begin to infect red blood cells.

Within 48 to 72 hours, the parasites inside the red blood cells multiply, causing the infected cells to burst open.

The parasites continue to infect red blood cells, resulting in symptoms that occur in cycles that last two to three days at a time.

Malaria is typically found in tropical and subtropical climates where the parasites can live.

What causes malaria?

Malaria can occur if a mosquito infected with the Plasmodium parasite bites you. There are four kinds of malaria parasites that can infect humans: Plasmodium vivax, P. ovale, P. malariae, and P. falciparum.

P. falciparum causes a more severe form of the disease and those who contract this form of malaria have a higher risk of death. An infected mother can also pass the disease to her baby at birth. This is known as congenital malaria.

Malaria is transmitted by blood, so it can also be transmitted through:

an organ transplant

a transfusion

use of shared needles or syringes.

Symptoms of Malaria

The symptoms of malaria typically develop within 10 days to 4 weeks following the infection. In some cases, symptoms may not develop for several months. Some malarial parasites can enter the body but will be dormant for long periods of time.

Common symptoms of malaria include:

shaking chills that can range from moderate to severe

high fever

profuse sweating

headache

nausea

vomiting

abdominal pain

diarrhea

anemia

muscle pain

convulsions

coma

bloody stools.

Diagnosis and Treatment : infected person is diagnosed and treated with ACT drugs.

6 0
3 years ago
Read 2 more answers
1.This method of reforestation is done by natural means with the aid of the wind,birds,rodents and running water which scatters
ANEK [815]

Answer:

  1. T. Natural Reseeding.
  2. D. Species Diversity
  3. A. Ecosystem Diversity.

Explanation:

Natural reseeding uses natural elements and actors to plant the seeds of trees. These elements and actors include water, wind, birds, rodents and other actors capable of scattering seed.

Species diversity is what defines the differentiation between the different species in an ecosystem and Ecosystem diversity relates to how biological communities/ ecosystems can be different from each other based on the organisms and food chains available in each.

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3 years ago
Give examples of how radiation can lead to mutation
statuscvo [17]

Answer:

cystic fibrosis, phenylketonuria, hemochromatosis, Bloom's syndrome, and ataxia-telangietasia. The X-linked recessive diseases are due to mutations in genes located on the X chromosome and include Duchenne's muscular dystrophy, Fabry's disease, steroid sulfatase deficiency, and ocular albinism.

Explanation:

8 0
3 years ago
1. What are enzymes?
SIZIF [17.4K]
1.) Enzymes are a type of protein that speeds up the rate of chemical reactions
2.) Catalase is an enzyme in the liver that hydrogen peroxide (H2O2)
3.) By lowering the activation energy needed
4.) Catalysts
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3 years ago
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