Explanation

Earthworms improve soil fertility by decomposing organic matter, making nutrients available to plants.

They enhance soil aeration and structure, acting as natural bio and living fertilizers.

Explanation

CFCs damage the ozone layer, increasing UV radiation exposure.

Excess UV rays cause skin cancer by damaging skin cells' DNA.

Explanation

The Aedes mosquito, especially Aedes aegypti, is the primary vector of dengue fever.

Anopheles transmits malaria.

Culex transmits other diseases like West Nile virus.

Explanation

Glucose is a small sugar molecule, a simple carbohydrate, not a macromolecule.

Proteins, sucrose (a disaccharide), and fatty acids are larger or complex molecules often considered macromolecules or part of them.

Explanation

A hypothesis is a proposed explanation or possible answer to a scientific problem.

Data are facts collected.

Conclusion is the final decision after analysis.

Explanation

Gases fill all the space available to them by expanding to take the shape and volume of their container.

Unlike solids and liquids, gases have no fixed shape or volume.

Explanation

Gas molecules have very weak forces of attraction already, so breaking them does not require much energy.

Thus, "Less energy is required..." is NOT a unique characteristic describing their general behavior compared to solids or liquids.

Explanation

Greenhouses are structures designed to provide an optimal environment for plants, particularly during colder seasons.

They trap sunlight, creating a warmer, more stable temperature that promotes plant growth in winter or colder climates.

Explanation

Aluminium has a valency of 3 because it loses three electrons to achieve a stable electron configuration.

Its atomic number is 13.

Its electron configuration is 2, 8, 3.

This means it donates three electrons to form Al³⁺ ions.

Explanation

Abiotic components are non-living parts of the environment.

Water vapor is a non-living element.

While beetle, apple, and lion are living organisms.