Explanation

1. Mercury

Swift Planet for Mercury

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2. Venus

Eight planets in the solar system

Explanation

A microscope is designed to magnify tiny, close-up objects that are not visible to the naked eye.

It helps in studying small details of specimens like cells, microorganisms, and other minute structures.

Explanation

Acid rain contains high levels of sulphuric acid and nitric acid.

It formed when sulfur dioxide (SO₂) and nitrogen oxides (NOx) react with water in the atmosphere.

These acids contribute to environmental damage.

Explanation

Penicillin works best on gram-positive bacteria by inhibiting peptidoglycan production, making the cells leaky and fragile

The cells burst open and are much easier for the immune system to break down, which helps the sick person heal more quickly.

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Related Question

Penicillin was discovered by Alexander Flaming In 1928

Penicillin was the first true antibiotic

Explanation

An anemometer is an instrument that measures wind speed.

This type of anemometer has a spinning wheel.

Additional Information:

A hygrometer is an instrument used to measure humidity

A salinometer is used to measure the salinity

A bolometer is used to measure the power of incident electromagnetic radiation

A barometer is used to measure air pressure in certain environment.

Explanation

plants cell have cell wall while animal cell have only cell membrane

Explanation

• Wavelength is the distance between two consecutive points on a wave that are in phase with each other.
• Such as two crests or two troughs.

Explanation

• The greenhouse effect is an environmental problem caused by the increasing amount of carbon dioxide (CO2) in the atmosphere.
• Primarily due to human activities such as burning fossil fuels, deforestation, and land-use changes.
• This excess CO2 traps heat and leads to global warming and climate change.

Explanation

Malaria is caused by Plasmodium parasites.

The parasites are spread to people through the bites of infected female Anopheles mosquitoes, called "malaria vectors.

Explanation

Isaac Newton proposed the law in 1687

and utilized it to clarify the observed movements of the planets and their moons.

The law of Gravitation had been mathematically formulated by Johannes Kepler in the early 17th century.

ND28-4-2023