Changing a river into a lake is basically what a large dam does. One reason we do this to create reservoirs of freshwater. However, dams change the local ecosystem in a big way.
What is one negative impact of building a dam?
A) Dams are needed to create hydroelectricity.
B) Dams can create smog that pollutes the lake.
C) Dams can help reduce the intense heat of summer.
D) Sometimes people who lived along the banks of the river are displaced.

Amass of 100.0 g of solute is dissolved in water so that 850. ml of a 0.7500 m solution has been prepared. what is the molar mass of the solute?

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.