Answer:
Magma is less dense than the surrounding rock which causes it to rise. When magma reaches the surface it is then called lava and the eruptions of lava and ash produce volcanoes. The lava that reaches the Earth's surface will harden and become igneous rock.
Explanation:
Answer:
pollution is the introduction of harmfull material in the invironment called pollution
Answer:
Carbon dioxide is a greenhouse gas and traps heat in the atmosphere. Without it and other greenhouse gases, Earth would be a frozen world. But humans have burned so much fuel that there is about 30% more carbon dioxide in the air today than there was about 150 years ago, and Earth is becoming a warmer place.
Answer:
11: Independent variable
12: Sink
13: Depends on whether your teacher will let you play once a lesson is over but in most classrooms I would say it is not allowed
14:Theory
15: Objective
16: 3
Explanation:
