sustainable management of natrual resources — Science STD 10 — Question

The opening and closing of stomata depends on what ?

Which process is significant in a primary producers for to sustain an ecosystem?

In an ecosystem third trophic level is always occupied by which animals?

In which of the following, the new combinations of genes formed ?

Through whom does the impulse enter into the cyton?

An element which is an essential constituent of all organic compounds belong to..........

For persons suffering from near-sightedness the power of the lens used in spectacles is __________ .

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, for example, hydrogen. After the formation of four bonds, carbon attains the electronic configuration of....