Exams

Biodegradable substances can be broken down into simpler, harmless substances in nature with due course of time by the biological process such as action of microbes. They can be recycled as a part of food chain.

Here, Leather bags are biodegradable.

Jean Piaget was a cognitive psychologist who identified four stages of development: the sensorimotor stage from birth to 2 years, the preoperational stage from age 2 to age 7, the concrete operational stage from age 7 to 11, and the formal operational stage from age 11 to adult. He identified milestones that occur at each stage.

According to Piaget, the main task of the sensorimotor stage is for the child to learn the concept of object permanence, use senses and motor skills to understand the world.

The first option is incorrect because it is devoid of blood cell, also red blood cells so doesn’t contains haemoglobin.

The second option is incorrect because plasma is colorless.

The third option is also incorrect because plasma contains the clotting factors.

The floridian starch is reserve food materials in the red algae or the members of class Rhodophytae. It is a characteristic feature of this group.

Washing soda is the common name for Sodium Carbonate (Na2CO3). It is also called as Soda Ash.

M=p(1+i)^n

The part of the earth and its atmosphere in which living organisms exist or that is capable of supporting life is called Biosphere.