Explanation:
what is the question so i can answer
Answer:
The correct option is A. Measuring radioactive decay of element isotopes
Explanation:
At the time of formation of rock, certain kinds of radioactive isotope elements get trapped in the rock. These radioactive isotopes are unstable and decay over a period of time forming daughter elements. A rock which will have more number of radioactive elements will be newer to a rock containing non-radioactive daughter elements.
The radioactive decay of each element can be measured by the half-life of elements. This is the primary technique to determine the absolute age of a rock.
Designing and constructing buildings that are made of recycled materials, energy efficient, and economical, is a trend called<span> Green architecture.</span>
Answer:
The second and third pictures show actions that will most likely lead to an increase in Carbon Dioxide. Hope that helps! :)
The electromagnetic spectrum is made up of seven types of waves, they are: radio, microwave, infra red, visible lights, ultraviolet, X ray and gamma ray. The electromagnetic waves have both electric and magnetic properties and they can travel through vacuum. The waves have different properties and diverse uses.
The part of the electromagnetic spectrum that can penetrate all human skin and soft tissues is X RAY. X ray have short wavelength and it can penetrate soft tissues such as skin and muscles. Because of this property, it is typically used in the health care system to take X ray pictures of bones; the pictures help the health care providers in their diagnosis.