Explanation

Friedrich Frobel (1782–1852) was a German educator who developed the Kindergarten system.

He believed in learning through play and introduced structured activities for early childhood education.

Explanation

Skin regulates body temperature through sweating, blood flow adjustment, and insulation.

It helps maintain homeostasis by releasing heat or conserving warmth as needed.

Explanation

Slow stretching and holding method gradually lengthens muscles and improves flexibility without causing injury.

Holding the stretch for 15-30 seconds allows muscles to adapt and relax, increasing range of motion effectively.

Explanation

To simplify the expression:

ac + ad + bc + bd

Factor out the common terms:

a(c + d) + b(c + d)

Then, factor out the common binomial factor:

(a + b)(c + d)

Explanation

Epithelial tissue forms the inner lining of the mouth, providing a protective barrier.

It is composed of layers of cells that protect underlying tissues.

Explanation

Physical education primarily aims to enhance physical movement, coordination, and overall fitness.

It also promotes the development of motor skills and physical health.

Explanation

Spirogyra is an algae, whereas Mold, Yeast, and Rhizopus are fungi.

It performs photosynthesis, while fungi are decomposers.

Explanation

A decathlon consists of 10 track and field events.

It includes sprints, jumps, throws, and distance races, usually contested over two days.

Explanation

To solve the equation 5 - 3x = 14:

5 - 3x = 14

Subtract 5 from both sides:

-3x = 9

Divide both sides by -3:

x = -3

Explanation

To write 50700 in scientific notation, move the decimal point to the left until you have a number between 1 and 10:

50700 → 5.07 × 10⁴