Lucy, the girl sitting behind you in your biology class, always gossiping about something that is someone else's business, tells you that she believes that mary lou likes jimmy joe. lucy's statement could be everything but

a) data.
b) a hypothesis.
c) an observation.
d) a scientific theory.

european union policies. the eu's long-term objective is to achieve levels of air quality that do not result in unacceptable impacts on, and risks to, human health and the environment. eu policies aim to reduce exposure to air pollution by reducing emissions and setting limits and target values for air quality.

the main environmental problems in western europe were: energy production/acid rain, nuclear power/waste, air pollution/climate, heavy metals, pesticides, water pollution, solid waste, and unforeseen accidents. many environmental problems are common to most european countries.

a. the production of carbon dioxide through the process of photosynthesis