Radiometric dating, often called radioactive dating, is a technique used to determine the age of materials such as rocks. It is based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.
The difference between a controlled variable and a constant is that a constant variable does not change through the experiment and a controlled variable can change.
The effects that science and technology had given on humans
and other organisms is that they were able to provide health care in a way of
fighting certain disease or illness in prolonging life, another way is
transportation—to make it easier for a person to transport without having to go
through a hard time. Another factors are communication, exploration and even
agriculture. They were able to provide methods in making certain things to be
done easy and without having to go through hard methods.
Hollow lightweight bones benefit the bird by letting it fly. If the bird had regular bones like any other animal, then the bird wouldn't have the ability to be able to fly due to the extra weight.
The Answer is A
Explanation:
End hunger, achieve food security and improved nutrition and promote sustainable agriculture.