Explanation

Photosynthesis requires carbon dioxide, water, and sunlight, not oxygen.

Respiration, rusting, and combustion all need oxygen to occur.

Explanation

The decision-making process inherently involves multiple specific and varied activities, such as:

• Information gathering (research, data analysis)
• Evaluation of alternatives (pros/cons, risk assessment)
• Implementation (action plans, monitoring)
• Review (feedback loops, adjustments)

Explanation

Water (H₂O) is a pure compound, not a mixture.

Tea, air, and alloys are mixtures of different substances.

Explanation

Polythene is a polymer made by linking many ethene (ethylene) monomers.

It is widely used in plastic bags and packaging materials.

Explanation

A hand drill uses two mutually perpendicular gears to convert rotary motion.

This mechanism increases torque and helps in efficient drilling.

Explanation

A moving car possesses kinetic energy due to its motion.

Kinetic energy depends on the mass and speed of the object.

Explanation

In the sentence "She did not eat any fruit":

"Any" is an adjective modifying the noun "fruit" (quantifying it negatively).

"Fruit": Noun (object).

"Eat"/"Did": Verbs.

Explanation

Educational psychology aids in understanding how students learn and how to address their individual needs.

It helps in handling teaching difficulties, enhancing learning, and supporting slow learners effectively.

Explanation

The phrase "Expected children" typically refers to children who develop at a typical pace without requiring specialized interventions. These children:

• Can integrate into mainstream classrooms.
• Do not need special education facilities (though inclusive education benefits all).
• Follow standard developmental milestones.

Explanation

The word "the" before the blank indicates a superlative degree.

"Tallest" is the superlative form of "tall", used to show the highest degree among all trees.