Answer:
A. Carbon dioxide gas forms because an acid and a carbonate react.
If the results of an experiment have different conclusions, something must have changed. these are called **variables**. if more than one variable is changed, the result would be different. because the total conclusion is different, it is a hypothesis, because it is not universally true.
Y chromosome because it has been passed down through generations, one man 60,000 years ago
The right answer is D. Clumped
A population is a set of individuals or elements sharing one or more characteristics that serve to group them together. We are talking about the population of being alive, of the human population, of the biological population ...
In this image we see three distinct groups of population (red dot) according to their position on the image.
