Explanation

Diatoms are microscopic algae and a major component of phytoplankton in aquatic ecosystems.

They play a key role in oxygen production and the marine food chain.

Explanation

A hypothesis is a testable, tentative explanation for a biological problem, based on initial observations.

It guides experiments and is later validated or refuted.

Explanation

Detritus food chain starts with dead organic matter (detritus), including decaying plant material.

Decomposers (like fungi, bacteria) and detritivores (like earthworms) feed on this material, converting it into simpler substances.

Explanation

The n + l rule helps determine the energy of orbitals, where n = principal quantum number and l = azimuthal quantum number.

For 3p orbital, n = 3 and l = 1, so n + l = 4, matching the given condition.

Explanation

In this reaction, element C displaces B from compound AB, forming A + BC.

Such reactions are classified as single displacement or single replacement reactions.

Explanation

Lactobacillus bulgaricus is a lactic acid bacterium used primarily in the fermentation of milk to produce yogurt.

It works alongside Streptococcus thermophilus to convert lactose into lactic acid, giving yogurt its texture and tangy flavor.

Explanation

Loudness is how the intensity of a sound is perceived by the human ear.

Greater intensity → louder sound.

It is measured in decibels (dB).

Explanation

A thinner convex lens has a longer focal length because it bends light rays less sharply than a thicker convex lens.

A thicker convex lens has a shorter focal length as it bends light rays more strongly, bringing them to focus sooner.

Explanation

Explanation

Fats are lipids, not carbohydrates; they are made of fatty acids and glycerol.

Ribose, Starch, and Glucose are all carbohydrates composed of carbon, hydrogen, and oxygen.