The remains of extraterrestrial particles that are found on earth’s surface are called

Meteorites

Explanation:

A meteorite is a form of debris which comes from celestial objects such as comet, asteroid, or meteoroid and have separated from the parent object’s body and pass through the atmosphere to reach the surface of the planet  where they are considered as remains of celestial object.  

These remains can be used to study the  history and origin of its parent body.

weathering is the answer.

brain development. a child's brain undergoes an amazing period of development from birth to three—producing more than a million neural connections each second. the development of the brain is influenced by many factors, including a child's relationships, experiences and environment.

explanation: