Explanation

The normal body temperature is: 37°C

The average normal body temperature is generally accepted as 98.6°F (37°C).

A temperature over 100.4°F (38°C) means you have a fever.

Additional Information:

Hypothermia is the term used for temperature less than 36.50°C

Mild Pyrexia is the term used for temperature (99-100°F)

Moderate Pyrexia is the term used for temperature (100-103°F)

Severe Pyrexia is the term used for temperature (103-105°F)

Explanation

Silicon is the second most abundant element in the Earth’s crust (after oxygen).

It is commonly found in minerals like sand (silica) and quartz.

Making up approximately 27% to 28% of its mass.

Last updated 14-feb-2026

Explanation

The total percentage of silicon in the Earth's crust is approximately 27.7% by weight.

Additional information

Abundance: Second most abundant by weight (~ 28%) and volume (0.9%).

Occurrence: It does not exist in pure form in nature, but rather as oxides (e.g., sand, quartz) and silicates (e.g., feldspar, mica, clay).

Last updated 14-feb-2026

Explanation

• The genetic material (DNA) of an organism can undergo changes called mutations due to environmental factors.
• Examples of environmental factors: radiation, chemicals, UV light.
• Such changes can lead to variation in traits and sometimes evolution.

Last verified on 11-02-2026

Explanation

• Bacteria reproduce asexually mainly by binary fission, where one cell splits into two identical cells.
• This is a rapid process, allowing bacteria to multiply quickly under favorable conditions.

Last verified on 12-02-2026