Why are cells called the building blocks of an organism? They are visible to the naked eye.

They are made from nonliving materials.

They are the basic unit of life.

They are able to generate new cells.

A cell is the smallest unit of life, also called the 'building blocks of life' because cells multiply and differentiate to form a multicellular organism as well as give rise to new organism by forming gametes or reproductive spores.

Explanation:

The correct answer is option ( C )

True

Explanation:

Tundra is the coldest biome on planet earth and it is basically of three types –  

a)  Arctic Tundra – It supports small plants and there are total 1700 varieties of them. Since the soil is frozen deep root tress are not supported. Animals such as arctic foxes, lemmings, wolves, polar bears, squirrels, salmon, etc are also able to survive in this biome.

b)Antarctic Tundra – Among the plant species one can easily find ichens, grasses, liverworts, and mosses and among the animal species one can easily find seals, penguins, rabbits, and albatross.  

c)Alpine Tundra – Plants species include only dwarf shrubs, grasses etc. while animal species include marmots, mountain goats, sheep