Exploring Substances: Acidic, Basic, and Neutral — Science STD 7 — Question

The long structure of small intestine is accommodated in small space within our body. Comment.

The process of breakdown of rocks by the action of wind, water, sunlight.

List five products we get from forests.

Photosynthesis requires chlorophyll and a few other raw materials. Add the missing raw materials to the list given below:
Water, minerals,

Some definitions are given below which can be corrected by changing one word. Correct them:
Aquifer is ground water stored between layers of hard rock above the water table.

Sunlight, chlorophyll, carbon dioxide, water and minerals are raw materials essential for photosynthesis. Do you know where they are available? Fill in the blanks with the appropriate raw materials. Available in the plant: .

What is circular motion?

Which part of the digestive canal is involved in: Formation of faeces _____________.

Why are you advised to use an umbrella when you go out in the sun?

State whether the following statement are true or false.
Anaerobic bacteria digest animal waste produce biogas.