P-2 Life Processes in Living Organisms Part – 1 — Science STD 10 — Question

We can see biodiversity on three levels.

Respiration is considered to be an exothermic reaction.

Environmental problems are increasing in the recent times.

Fluorine is the most reactive among the halogens.

By the age of 45 – 50 women gets menopause.

Write scientific reason.
The bottom of some steel utensils used for cooking is copper.

Use of mutant strains has been increased in industrial microbiology.

 In the electric equipment producing heat e.g. iron, electric heater, boiler, toaster, etc. an alloy such as Nichrome is used, not pure metals.

Grills of doors and windows are always painted before they are used.

We cannot clearly see an object kept at a distance less than 25 cm from the eye.