1. which of the following is a true statement? 
 a. the starting costs for tidal wave energy are expensive 
b. wave energy produce high environment impact 
c. tides are not predictable 
d. produces a lot of air pollution 

2. how can we decrease the use of fossils fuels? 
a. conserving energy and making energy more efficiently
 b. prevent people from mining and burning coal 
c. create more wind and tidal energy
 d. all of the above 

3. which of the following cannot be used to create electricity? 
a. geothermal energy
 b. solar energy 
c. wind power
 d. tidal energy


Cedure,© data: rmativetable 1: positive and negative results when imacromoleculeregative results when testing for the presence of macromoleculeschemical test | positive test result negative tcarbohydrates – simplesugarse negizitivecarbohydrates – 2: results for the presence of macromolecules in the evidence sample

How many types of rock can form from the rock cycle

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary