Large intestine absorbs the water from undigested food.

autotrophs

Similarities Both thermometers are used to measure temperature and both of them use mercury.
Differences Clinical thermometer is used to measure human body temperature whereas laboratory thermometer is used to measure temperature of other object which has higher temperature than human body temperature.

The swift movement of the falling water along with the rising warm air producing sound, lightning, heavy rain and strong wind is called thunderstorm.

Plants show two major modes of nutrition, i.e.
(i) Autotrophs are those which can synthesise their own food.
(ii) Heterotrophs are those which are dependent on other plants and animals for their food.
They are of following types:
(a) Parasites, e.g. Cuscuta
(b) Saprotrophs, e.g. fungi

The various components of food and their simpler forms are

The reaction between an acid and a base is known as neutralisation reaction. In this reaction, both acid and base cancel each other's effect. Neutralisation reaction results in the formation of salt and water. During this reaction, energy in the form of heat is evolved.
Acid + Base \(\longrightarrow\) Salt + Water + Heat \(\uparrow\)
e.g. when sodium hydroxide (NaOH) is added to hydrochloric acid (HCI), sodium chloride (NaCl) and water (H₂O) are obtained.
NaOH     +       HCI           \(\longrightarrow\)  NaCI      +   H₂O + Heat \(\uparrow\)
Sodium        Hydrochloric           Sodium      Water
hydroxide     Acid                        Chloride

Heat travels in air through convection.

As the temperature increases, then expansion in mercury takes place which leads to the rise in the level of mercury in thermometer.

The process of breeding of selective parents for obtaining special characters in their offspring such as soft under hair in sheep, is termed as selective breeding.

Hurricane and typhoon are the other names of cyclone.

When magnesium is burnt in the air then a brilliant white flame is obtained.

Weathering is a natural process by which huge rock is broken down into tiny particles but at a very slow rate.

The process by which absorbed food is taken by body cells and is used for energy, growth and repair is called assimilation.

Carbonic acid.

Stomata are the tiny pores present on the surface of leaves through which gaseous exchange takes place in plants.

The major factor which determines the climate of a place is latitude.

Strong wind and rain can cause soil erosion from the barren land. This can be shown by performing an activity.
Take a wooden block and place some soil or sand on it. Keep an ice-cube tray at one end of the wooden black. Take a small battery-operated fan or hair dryer and hold it at the other end of the black near sand so that it blows the sand into the tray.
We will observe that when the fan blows it causes sand or soil particles to move and these get land in the various compartment of the ice-cube tray. This activity shows that the wind blows the soil on a barren land and may cause soil erosion.

The process by which green plants can prepare their own food is called photosynthesis. Green plants possess chlorophyll in their leaf and utilises carbon dioxide (from air) water, minerals (from soil, through root) as raw material and sunlight as source of energy and convert light energy into chemical energy. The food thus synthesied is in the form of starch (carbohydrate). The overall reaction for photosynthesis can be given as follows: