Answer:
Carbon dioxide
Explanation:. Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food.
Answer:
Answer is C. A number of relevant variables are assumed to be constant.
Explanation:
The term "other things equal" is a Latin term "ceteris paribus". This term is very important in economics because it has solved the issue of having difficulty in isolating different variables that may change the outcome of ones study. That is, independent variables that are affecting dependent variables.
Physical chemists study matter and energy, and there is chemical reactions in your body, and all living things have elements, like carbon.
I would say D
The dependent variable is the variable that is being measured or tested in an experiment.
independent variable is the cause of a change in or effect on the dependent variable.
Half life is the time taken by a radioactive isotope to decay by half of its original mass. In this case the half life of carbon-14 is 5500 years.
The original mass is 30 g and the new mass is 3.75 g.
New mass = Original mass × (1/2)^n, where n is the number of half lives;
3.75 = 30 × (1/2)^n
1/8 = (1/2)^n
n = 3
Thus, the time taken will be; 3 × 5500 = 16500 years.
