Explanation

During photosynthesis, plants use water (H2O) along with carbon dioxide (CO2) to produce glucose and oxygen.

The oxygen released comes specifically from the water molecule.

Being split apart to provide the oxygen atoms needed for the glucose molecule. 

Explanation

Scorpions and spiders both belong to the class Arachnida.

This class includes arachnids, which are characterized by having eight legs and lacking antennae.

Explanation

Former prime minister of Pakistan Benazir Bhutto

She was the author of an autobiography titled Daughter of the East 

Publisher Simon & Schuster

Publication date 7 January 1989

****

Explanation

The Central Nervous System (CNS) comprises the:

These two structures are the core of the nervous system, 

• The brain controls how we think, learn, move, and feel.
• The spinal cord carries messages back and forth between the brain and the nerves that run throughout the body..

Explanation

The study of the nervous system and its disorders is called neurology.

Neurologists diagnose and treat conditions related to the brain, spinal cord, and nerves.

Explanation

Given:

• Speed from A to B = 40 km/h

• Speed from B to A = 40 km/h + 50% of 40 km/h = 40 + 20 = 60 km/h

Find:

Average speed for the whole journey (both ways).

Formula for average speed when distance is the same but speeds differ:

Plug in values:

=4800/100

=48 km/h

Explanation

The SI unit of heat is the joule (J).

Heat is a form of energy.

The joule is the standard unit for energy in the International System of Units (SI).

For instance, 1 joule of heat is the energy required to raise the temperature of 1 gram of water by 0.24°C. 

Explanation

If one angle of an isosceles triangle is 68°, then:

- If 68° is the vertex angle, the other two equal angles = (180 - 68) / 2 = 56°  

- If 68° is one of the equal base angles, then the vertex angle = 180 - 2×68 = 44°

So, possible values for the second angle are 44° or 56° 

Explanation

The correct option is: He gave me all the maps freely.

This sentence is grammatically correct and conveys the intended meaning that he gave the maps without charging any money.

Explanation