Light — Science STD 8 — Question

State the function of male sex hormone ‘testerone’.

How many types of non-contact forces are available ? Give the names.

Can we make another tester which can detect a weak current?

Some words (underlined) in the following sentences are jumbled up. Write them in their correct form.Some substances on combustion produce thea and mafel.

Name one disease which spreads through infected food or water.

Give two examples of conductor.

Which air pollutant combines with the haemoglobin of our blood?

Name one component of the triple planetary crisis.

Select the correct word from the following list and fill in the blanks.
float, water, crop, nutrients, preparation
Damaged seeds would __________ on top of water.

Fill in the following blanks with suitable words: The process of ______________ ensure continuity of life on earth.