Explanation

The neutron is a neutral particle,

which is stable only in the confines of the nucleus of the atom.

Explanation

Reverse osmosis is a water purification process

that uses a partially permeable membrane to remove ions,

unwanted molecules and larger particles from drinking water.

Explanation

A solar panel, consisting of many photovoltaic cells.

A photovoltaic (PV) cell is an energy harvesting technology.

It converts solar energy into useful electricity through a process called the photovoltaic effect.

Explanation

Explanation

On May 4th, 1984 four papers by Robert C. Gallo's group were published in Science describing a new human retrovirus virus as the probable cause of AIDS.

Explanation

Over the first 20 years after entering the atmosphere, methane has more than 80 times the warming power of carbon dioxide.

Despite the fact that CO2 has a longer-lasting effect, methane accelerates warming in the short term.

Explanation

The carbon compound which forms the endoskeleton and exoskeleton of animals is calcium carbonate.

Seashells are the exoskeletons of mollusks such as snails, clams oysters and many others.

Such shells have three distinct layers.

They are composed mostly of calcium carbonate with only a small quantity of protein--no more than 2 percent.

Explanation

Biodegradable:

Materials that decompose naturally by microorganisms.
Examples: Paper, food waste, leaves.

Non-Biodegradable:

Materials that do not decompose easily or naturally.
Examples: Plastics, metals, synthetic fibers.

Explanation

A child respires around 26 times per minute.

Normal man respires 14-18 times per minute.

If the CO2 concentration in blood increases, the rate of breathing also increases.

When CO2 is dissolved in the blood, then blood becomes slightly acidic.

The brain picks up the change and adjusts the breathing to get rid of CO2 from the blood.

Explanation

How does the Navstar GPS work for different applications? (5)

The Navstar GPS works by using a constellation of satellites that send signals to GPS receivers on the ground, allowing them to calculate precise location coordinates.

It is used in various applications like navigation, mapping, surveying, military operations, and location tracking for vehicles and personal devices.

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