Explanation

Explanation

Sea anemones are called flower animals because they look like flowers. 

They are marine animals that are part of the class Anthozoa, which means "flower animals" in ancient Greek.

They are cylindrical in shape.

They are attached to a substrate.

They are often brightly colored.

They can grow to be 1.8 to 10 cm in diameter.

The name "anemone" comes from the anemone flower.

Explanation

Key points about codons:

Triplet code: A codon consists of three bases.

Function: Each codon codes for a specific amino acid.

Location: Codons are found on messenger RNA (mRNA).

Explanation

He exclaimed with surprise that he was a great teacher.

The sentence expresses surprise, so "exclaimed" is used in indirect speech.

The tense changes from "are" to "was" to match indirect speech rules.

Explanation

Active immunity is developed when the body’s immune system responds to an infection by producing its own antibodies.

Passive immunity occurs through injection or transfer of antibodies, but active immunity requires antigen exposure.

Explanation

Explanation

Explanation

Explanation

Explanation

We need to protect the environment/earth.

ہمیں ماحول/زمین کی حفاظت کی ضرورت ہے۔

Usually Article the is used before unique things like Sun, Earth, Moon etc.