Wastewater Story — Science STD 7 — Question

List some animals which live in deeper areas of the forest.

When a blood vessel is cut, blood comes out immediately. After some time, a dark red clot is formed on the cut. Name the cell responsible for this.

How does growing pulses in the field help the soil?

What type of clothes should we wear in the summer?

State the way through which we can prepare a pendulum by our own.

Algae are green in colour. Why?

Bryophyllum leaves reproduce using which mode of reproduction?

Explain thunderstorm and how are they produced.

Have you ever seen an electrician using a screwdriver? What type of material is used for making its handle?

Identify the location of salivary gland.