Nutrition in Plants — Science STD 7 — Question

Consider the following organisms
Grass, birds, frog, crow, tiger, vulture, toadstool, deer.
Which of these
(i) can eat the dead animals?
(ii) can form a three step food chain?

How wind affect climate of a place?

How is fog formed?

Fill in the blanks: The inner wall of the small intestine has many finger-like outgrowths called ___________.

Why does topsoil have the most humus?

Name the process by which plants prepare their own food.

Boojho wonders, why the level of mercury should change at all when the bulb of the thermometer is brought in contact with another object?

Why is uppermost layer of soil, dark in colour?

What is the nature of non-metal oxide?

Which part of the respiratory system helps trap dust?