Reptiles typically have a three-chambered heart, except for crocodilians which have a four-chambered heart.

Reptiles (Reptilia) are known for having scales and typically lay eggs on land, adapting to terrestrial life.

Class Aves (birds) are warm-blooded, maintaining a constant body temperature.

Class Aves is characterized by the presence of feathers, which are unique to birds.

The desert climate zone is characterized by very low precipitation and extreme temperature variations.

The tropical climate zone is characterized by warm temperatures and high levels of rainfall year-round.

All of these colligative properties can be used to determine the molar mass of a solute.

Electrolytes dissociate into ions, affecting all colligative properties by increasing the number of solute particles.

All of these colligative properties can be used to determine the molar mass of a solute by applying the appropriate formulas.

All of the listed colligative properties can be used to determine the molar mass of a solute.

A modem (modulator-demodulator) converts digital signals from a computer into analog signals for transmission over telephone lines.

The GPU (Graphics Processing Unit) is responsible for rendering graphics and images in a computer.

White blood cells, or leukocytes, are the key players in the immune response, helping to defend the body against infections.

White blood cells (leukocytes) are responsible for the immune response, helping to fight infections and foreign substances.

The somatic nervous system controls voluntary movements, making option 3 the correct answer.

C4H8 can exhibit both structural isomerism (different structures) and geometric isomerism (cis/trans forms).

Butan-2-one does not have a chiral center and therefore does not exhibit optical isomerism.

2-butanol has a chiral center and can exist as two enantiomers, thus exhibiting optical isomerism.

CH3COOH (acetic acid) is a carboxylic acid, containing the -COOH functional group.

Acetone is a ketone, which contains a carbonyl group (C=O) bonded to two carbon atoms.

Hexane is a saturated hydrocarbon, containing only single bonds between carbon atoms.

Propane is a saturated hydrocarbon, containing only single bonds between carbon atoms.

Sodium benzoate is widely used as a food preservative to prevent spoilage.

Acetic acid is the main component of vinegar, giving it its characteristic sour taste.

The graph illustrates that variable K exhibits erratic behavior, making its trend unpredictable.

'And' is used to connect two alternatives in a positive way.

Blood is a connective tissue that is responsible for the transport of nutrients, gases, and waste products throughout the body.

Adipose tissue stores fat in the body.

Blood is a connective tissue that transports nutrients, gases, and waste products throughout the body.

Africa is often referred to as the 'Dark Continent'.