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Explanation

Species is the basic unit of classification.

Species are a group of organisms that are morphologically similar and can interbreed.

1. Kingdom
2. Phylum
3. Class
4. Order
5. Family
6. Genus 
7. Species

Explanation

Explanation

In a bomb calorimeter, reactions are carried out at constant volume.

This is because the calorimeter is designed to keep the volume constant during the reaction.

Any heat released or absorbed during the reaction causes a temperature change, which is measured to determine the heat of the reaction.

The constant volume ensures that the heat measured is solely due to the chemical reaction taking place

Without any external influences like changes in pressure or volume.

Explanation

Explanation

The frequency of AC (Alternating Current) supply in Pakistan is typically 50 Hertz (Hz).

AC electricity alternates back and forth in a direction 50 times per second

Explanation

Thymine is the nitrogenous base which is not present in RNA

Thymine is one of the four nucleobases found in DNA (along with adenine, guanine, and cytosine)

Whereas RNA contains uracil (U) instead of thymine.

RNA uses uracil as a complementary base to adenine during transcription,

while DNA uses thymine as a complementary base to adenine during replication.

Explanation

The best choice to replace the word "disgust" in the sentence "The doctor grounded his teeth in disgust" is displeasure.

disgust نفرت

displeasure ناراضگی

Explanation

For a diatomic gas (like O₂ or N₂), the ratio of specific heats 𝐶𝑝/𝐶𝑣 is approximately 1.4.

This ratio is also known as the adiabatic index (γ).

It is used in thermodynamic processes.

Explanation

To solve the equation sqrt(x + 3) = 2,

we need to isolate x by getting rid of the square root.

Given equation:

sqrt(x + 3) = 2

Square both sides to eliminate the square root:

(x + 3) = 2^2

x + 3 = 4

Subtract 3 from both sides to solve for x:

x = 4 - 3

x = 1

Explanation

The mandible, or jaw bone, is the only movable bone of the skull

They are forming the temporomandibular joint with the temporal bone.