Match the letters to each term it describes below. a)narrow curve of land that connects north and south america. b)an endemic species inhabiting sierra gorda. c)central american country that runs parallel to cocos ocean plate. d)you'll find nearly 20% of the world's fresh water here. e)stretches of it act as natural border between the u. s. and mexico. f)north america and canada make up this ecoregion. g)location of mount st. helens. h)one of only 17 countries recognized as megadiverse. i) this body of water is natural border between the u. s. and canada. j) an endangered soecies found in sierra gorda
1) mexico
2)great lakes
3)jaguar
4)rio grande
5)questretaro pocket gophor
6)cascade range
7)nearctic
8) isthmus of panama
9)guatemala
10) lake erie.

During metamorphic processes, increased pressure and temperature can affect the of minerals in rock. rocks subjected to very high pressure are typically than others because mineral grains are squeezed together, and the atoms are more closely packed. during metamorphic processes, water facilitates the transfer of ions between and within minerals, which can the rate at which metamorphic reactions take place. the growth of new minerals within a rock during metamorphism has been estimated to be about per million years. metamorphism is commonly associated with convergent plate boundaries, where two plates move toward each other. during contact metamorphism, a large intrusion will contain thermal energy and will cool much more slowly than a small one. metamorphosed sandstone is known as the metamorphic rock made from metamorphosed shale, was once used to make blackboards for classrooms

Which of the following is an example of an outdated theory based on the consensus of the scientific community ? a. big bangb. geocentric solar systemc. heliocentric theoryd. plate tectonics answer : geocentric solar system

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks