Question

various eclipses &conditions during that period

Answer 1

we all know that our environment is very necessary for our healthy existence on the earth. A healthy environment depends on the good habits of human beings and the circumstances we create. Human, animal, plants, earth and environment are indirectly connected to each other and necessary for the existence of healthy life here.

However, by any means if our environment gets affected negatively, creates lots of problems and many challenges in living a simple and healthy life. Our environment acts as a natural world for us and provides a protection to us from the natural calamities. However, it becomes helpless in protecting us if we disturbs its natural cycle and force it to harm us.

Answer 2

Eclipses tend to occur repeatedly and they are often separated by certain time intervals which are called as eclipse cycles.

There are mainly 2 types of eclipses - Solar eclipse and Lunar eclipse. The conditions for these eclipses are - 

Eclipses occur when the Earth, the Moon and the Sun are aligned with each other in such a way that the shadow of one body which is cast by the Sun tends to fall on the other body. So, when there is a new moon, the Moon will be in conjunction with the Sun and the Moon will pass in front of the Sun. This phenomenon appears on the Earth's surface at a certain region and which causes a solar eclipse.

During a full moon, the Moon which is in opposition to the Sun will pass through the Earth's shadow and a lunar eclipse will be visible on Earth from the half region that is experiencing the night.