Why should gasoline be stored in tightly covered narrow-mouthed containers and should be placed away from heat?

I.        Toreduce evaporation

II.       Topreserve its qualities

III.      To decreaseits potential as fire hazard

Why is it not advisable to repeatedly open the door of a refrigerator?

Which is a destructive fishing method wherein fishes are driven out of a coral reef by pounding the corals with a heavy weight?

What may occur when there is a severe damage to some parts of the brain due to lack of blood supply?

What kind of mirror is used in cars to give the driver a wider area and smaller image of the traffic him/her?

Lanny placed some mothballs inside her cabinet. After a week they were all gone. What happened to the mothballs?

You inherited tallness from your father. Physical traits are transmitted from parents to offspring through _______.

Which of these statements is false?

How can we prevent developing osteoporosis?

Which statement correctly differentiates boiling from evaporation?

I. Boilinghappens at a definite temperature while evaporation can occur at any temperature.

II. Boilinghappens when the vapor pressure exerted by the liquid becomes equal to theatmospheric pressure, while evaporation occurs when high energy molecules atthe liquid surface continuously escape to the space above the liquid.

III. Boiling isalways associated with temperature while evaporation is related only topressure.

All of the following are effects of deforestation, except:

All of the following problems may arise in the use of sanitary landfill, except:

Which of the following is heterogeneous?

Why do we hear thunder some seconds after seeing lightning?

Meteorology is a very important branch of natural science, without which we cannot be informed of forthcoming ______.