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

• The majority of nutrient absorption in the digestive system occurs in the small intestine,
• Where the final stages of digestion take place.
• This organ's structure, featuring villi and microvilli, creates a large surface area optimized for absorbing digested nutrients and most water into the bloodstream.

Last verified on 08-11-2026

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

• A voltmeter measures potential difference (voltage) between two points in a circuit.
• To do this correctly, it must be connected in parallel with the component across which the voltage is to be measured.

Last verified on 28-10-2026

Explanation

• Freshwater is water that contains a very low amount of salt, typically less than 1% salinity.
• Examples of freshwater sources include rivers, lakes, streams, and underground aquifers.

Last verified on 28-10-2026