Answer:
A
Explanation:
'pest' means insect and '-icide' means to kill, so pesticide literally means bug killer.
Answer;
-Correlational; experimental
Two main types of designs used specifically in human lifespan studies are correlational and experimental.
Explanation;
-Psychological studies vary in design. In correlational studies a researcher looks for associations among naturally occurring variables, whereas in experimental studies the researcher introduces a change and then monitors its effects.
-An experiment isolates and manipulates the independent variable to observe its effect on the dependent variable, and controls the environment in order that extraneous variables may be eliminated. Experiments establish cause and effect. A correlation identifies variables and looks for a relationship between them.
Answer:
Roses have had their genome sequenced by scientists who say it could help to develop genetically improved versions of the popular ornamental flower. Within the 36,377 genes identified, the research team found DNA coding for various desirable characteristics.
Explanation:
hope this helps
D) Gases such as carbon dioxide and methane
And the more of these from gas emissions, etc. then the more global warming.
FYI: ozone helps to blocks cosmic gamma rays from reaching earth