How can gamma ray be harmful to the body ? A- They pass right through, not harmful

B- If they have a reaction with heat in the atmosphere

C- If they become ionized , or charged , and can change with a new chemical reaction

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Imagine that certain laws of physics could be ignored and you were able to travel vast distances in moments. now imagine that you traveled to an earth-like planet located light-years away that is known to support life. think about what you’ve learned in this unit and make an argument for what you think would be the dominant type of life form on this planet. consider whether a notochord is required for an organism to manipulate its environment and become a dominant creature.

Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .