Explanation

Explanation

A solar eclipse can only take place during the phase of the new moon

when the moon passes directly between the sun and Earth and its shadows fall upon Earth's surface.

Explanation

Grass is a tree which means بانس 

Bamboo is mostly found in Asia, Africa, South America, and parts of North America

Bamboo releases 35% more oxygen than hardwood forests of equivalent sizes

• Bamboo is the fastest-growing plant. 
• Bamboo blossoms once a lifetime of a human.
• Bamboo can thrive without much care. 
• Bamboo is the world's tallest grass. 
• Bamboo can live for a century or more.
• Bamboo has been used as an alternative building material for centuries.

SH10-8-2023

Explanation

Robert Hooke is known as the founder of cell biology because he first observed and named "cells" in cork (1665).

His discovery laid the foundation for the cell theory developed later by Schleiden and Schwann.

Explanation

Alkali metals (like sodium, potassium, lithium, etc.) are highly reactive, especially with water and oxygen.

Because of this high reactivity, they cannot exist freely in nature — they are always found in the form of compounds (e.g., NaCl, KCl).