Question 10 of 10 2 points which of these is a drawback of oil extraction from tar sands? a. it removes a biological community and creates a deep, open pit. b. it can increase the frequency of earthquakes in the local area, c. it can be used with both surface and underground mines. d. it impacts a much larger area and obtains less oil than drilling. submit

Which substances have the lowest melting points: ionic covalent, or metallic

Which of the following best describes the formation of plasma?

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons