A fossil formed when minerals replace all or part of an organism is called amold.
trace fossil.
petrified fossil.
cast.

Answer:

They are home to 70 percent of the world's population.

Two-thirds of the people live in cities and earn their incomes from industry.

Explanation:

The term more-developed countries is linked to the concept of "developed country". Other terms to describe these countries are: "advanced country", "more economically developed country", "first world country", at it´s used to describe sovereign nations that have a developed economy and advanced technological infrastructure compared to other less industrialized nations. This concept also applies to Economies based on advanced technology and factories. For this reason, options 1 and 2 don't apply to "middle-income nations".

The term Middle-income countries is linked to the concept of "Developing Country". According to the World Bank, Middle Income Countries are home to 75% of the world’s population and 62% of the world’s poor. Also, they tend to have some characteristics in common, such as low levels of access to safe drinking water, sanitation and hygiene, energy poverty, low education levels, among others, so option 3 is incorrect as well.

Social change is very common in "Developing Countries", where rural populations migrate to the cities to work in the industries.

They are also known as more-developed countries.

They are home to 70 percent of the world's population.

two-thirds of the people live in cities and earn their income from industry.

Answer:

1- Option (C)

2- Option (D)

3- Option (A)

4- Option (E)

5- Option (B)

Explanation:

• Kepler's 1st law of motion-  According to the first law, all the planets that exist in our solar system revolve around the sun maintaining an elliptical path. These orbital paths are not circular in shape.

• According to the Ptolemaic system, the earth is considered to be fixed and is present at the center of the universe, and the Sun, planets, and other planets orbits around the earth. This orbital path is not circular-shaped. When observations were made from the steady earth, it is found to be producing an eccentric type of orbital path. It is because of the uneven motion that occurs due to the amalgamation of different types of circular motion.  

• The geocentric system is similar to the Ptolemaic system where the earth is at the center and other objects including the sun and other planets revolve around the earth.

• The Heliocentric system is similar to the Copernican system where the earth and other planets move around the sun at the center of the solar system.

• According to the Copernican system, the Sun was fixed and placed at or near the center of the Universe with respect to the earth and various other planets that orbit around it maintaining a circular path.