Explanation

• A Decomposition Reaction is a type of chemical reaction where a single compound breaks down into two or more simpler substances.
• This is the opposite of a Combination Reaction, where two or more substances combine to form a new compound.

Last verified on 07-11-2026

Explanation

• The instrument used to measure temperature is called a thermometer.
• A thermometer shows how hot or cold an object or place is.

Additional information:

• Barometer measures air pressure.
• Hygrometer measures humidity (moisture in air).

Last verified on 16-06-2026

Explanation

• Epistasis occurs when the expression of one gene is affected by another gene at a different locus.
• This interaction can mask or modify the effects of the other gene, leading to variations in phenotypes.

Last verified on 06-11-2026

Explanation

Water molecules are held together by hydrogen bonds,

It is a type of strong intermolecular force

Where the slightly positive hydrogen of one molecule attracts the slightly negative oxygen of another, creating a "sticky" network that gives water unique properties like surface tension.

Explanation

• The female gametophyte of angiospermic plants is the embryo sac.
• It is also known as the megagametophyte.
• It is the haploid (containing one set of chromosomes) structure within the ovule that contains the egg cell.
• It is responsible for fertilization.

Last verified on 06-11-2026

Explanation

• During the daytime, plants require Carbon Dioxide (CO2) for photosynthesis.
• Which is the process by which they produce glucose and oxygen.

Last updated by NA on 05-11-2026

Explanation

• Only about 2.5% or 0.025 (3%) of the water on Earth is freshwater, which is vital for human consumption, agriculture, and ecosystem health.
• The remaining 97.5% (97%) is saltwater, found in oceans, seas, and salt lakes.

Last verified on 02-11-2026

Explanation

The M orbit, also known as the third electron shell.

• It can hold a maximum of 18 electrons.

Additional information:

The K orbit, also known as the first electron shell.

• It can hold a maximum of 2 electrons.

The L orbit, also known as the second electron shell.

• It can hold a maximum of 8 electrons.

Last verified on 01-11-2026

Explanation

Explanation

• All electromagnetic waves (like light, X-rays, and radio waves) travel through a vacuum at the same constant speed.
• It is approximately 3 × 10⁸ meters per second.
• This speed is known as the speed of light in a vacuum.

Last verified on 31-10-2026