The correct answer is A. Class inclusion
Explanation:
Jean Piaget was an important Swiss psychologist mainly known for this theory of cognitive development that involved different stages and developments. In this theory "class inclusion" refers to the ability of children to consider an object or any other element can be included in multiple categories at the same time, for example, a dog can be classified into the category of animals, mammals, pets, domestic, etc. According to Piaget "Class inclusion" is mainly developed in the concrete operational stage (7 to 11 years) because before this, it is difficult for children to consider two aspects of an element at the same time and because of this, they are unable to recognize one element belongs to two categories.
This occurs in the case of four-year-old Meg because she does not consider marbles are classified within glass category and besides this, they can be either striped or white marbles. Instead, she considers glass category as different to marbles and because of this she believes neither strip or white marbles fit into the category of glass and therefore she answers there are more striped marbles.
distance each planet is from one another
distance of lightyear(lightspeed) per minute or hour
Social stratification is basically the separation of society into different classes. Karl Marx thought this system will inevitably fall and a new Communist society formed by only the middle class will take its place.
Jane Zhang The Ancient Egypt The ancient Egyptians enjoyed many natural barriers. To the west is the Sahara, the hottest desert in the world. To the east is the Eastern Desert. To the far south, the Nile's dangerous cataracts blocked their enemies. And in the north, the delta marshes offered no harbors for the invaders.
<span>The Egyptians were not completely closed to the outside world. The Mediterranean Sea and the Red Sea allowed them to trade with others. Geography The Nile River is about 4,160 miles in length and is the longest river in the world. </span>
<span>The ancient Egyptians settled along the Nile River and created the Nile River Valley.</span>
Answer:
Metal is a good conductor of heat but air is a poor conductor of heat.
Explanation:
Touching the metal sides of the oven can be harmful while holding our hand briefly in the oven air is okay. This tells us about the relative conductivities of metal and air <em>that metal is a good conductor of heat but air is a poor conductor of heat</em>. Conduction is the transference of heat through physical contact. Not all materials conduct heat in the same way. The best conductors of heat are metals and stone.
