The uniqueness of an individual organism in a population is accounted for by
evolution
variation
adaptation
mutation
Correct answer is B
Variation is the difference between individuals within a species.
Variations could occur by inherited or acquired characteristics.
The major cause of global warming is
burning fossil fuel
constructing dams
electricity utilization
space exploration
Correct answer is A
As greenhouse gas emissions blanket the Earth, they trap the sun’s heat. This leads to global warming and climate change.
This global warming is caused by increased concentrations of greenhouse gases in the atmosphere, mainly from human activities such as burning fossil fuels, and farming.
I and II only
II, III, and IV
I, II, and III
II and IV
Correct answer is C
- Onchocerciasis, also known as river blindness, is a disease caused by infection by the parasitic worm Onchocerca volvulus.
Symptoms include severe itching, bumps under the skin, and blindness.
The disease is spread by repeated bites from infected black flies and these can be found virtually anywhere there is flowing water to serve as habitat for larvae.
- Schistosomiasis, also known as bilharzia, is a disease caused by parasitic worms.
Infection occurs when your skin comes in contact with contaminated freshwater in which certain types of snails that carry schistosomes live.
- Salmonellosis is an infection with a bacteria called Salmonella. Salmonella live in the intestinal tracts of animals, including birds.
Commonly caused by contaminated food or water.
- Meningitis is an inflammation of the fluid and membranes (meninges) surrounding your brain and spinal cord. The swelling from meningitis typically triggers signs and symptoms such as headache, fever, and a stiff neck.
Some fungal infections are transmitted by airborne dust particles. In addition, other types of meningitis can be transferred to humans by vectors such as mosquitoes
(for example, West Nile virus) or ticks (Lyme disease).
The bacteria that cause meningitis are transmitted from person-to-person through droplets of respiratory or throat secretions from carriers. Close and prolonged contact – such as kissing, sneezing or coughing on someone, or living in close quarters with an infected person, facilitates the spread of the disease.
20%
25%
40%
60%
Correct answer is D
No explanation has been provided for this answer.
northern guinea savanna
southern guinea savanna
tropical desert
montane forest
Correct answer is C
No explanation has been provided for this answer.