Explanation

Air is not a component of a food web, as it is not a living organism or a source of energy or nutrients for organisms in the web.

Explanation

• The freezing point of water is 0°C (zero degrees Centigrade). 
• The boiling point of water is 100°C (one hundred degrees Centigrade).

Explanation

Chromosomes are made up of:

• Nucleic acid (DNA or RNA)
• Proteins (histones and non-histone proteins)

Explanation

• Sperms fuse with eggs to form a zygote, which is the single cell that results from fertilization.
• The zygote then develops into an embryo, and later a fetus, as it grows and matures.

Explanation

• Transparent objects do not form shadows because they allow all light to pass through them.
• So there is no blocking of light to create a shadow.

Explanation

• Maize (Zea mays) is a monocotyledonous plant.
• It belonging to the family Poaceae (grass family).

Explanation

Concave lenses are also known as diverging lenses, as they spread out light rays and diverge them away from a single point.

Explanation

• A rivet is used to fasten two hard materials together.
• Such as metal plates or sheets.

Explanation

• Glucose is the primary source of energy.
• It is building block for plant growth and development, produced through photosynthesis.

Explanation

• Aluminum is a non-ferrous metal.
• It is not capable of being magnetized or attracting magnets.