Question: Given the following passage "Copper is synthesized in massive stars and is present in the Earth's crust at a concentration of about 50 parts per million (ppm), where it occurs as native copper or in minerals such as the copper sulfides chalcopyrite and chalcocite, the copper carbonates azurite and malachite, and the copper(I) oxide mineral cuprite. The largest mass of elemental copper discovered weighed 420 tonnes and was found in 1857 on the Keweenaw Peninsula in Michigan, US. Native copper is a polycrystal, with the largest described single crystal measuring 4.43.23.2 cm.", answer the following question. Note that the answer is present within the text. Question: Where does one find Cu?
Answer: Earth's crust

Question: Given the following passage "In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms.", answer the following question. Note that the answer is present within the text. Question: How is the media modified?
Answer: specific nutrients added or deficient, or with antibiotics added

Question: Given the following passage "Alan Dershowitz described Sudan as an example of a government that "actually deserve(s)" the appellation "apartheid." Former Canadian Minister of Justice Irwin Cotler echoed the accusation.", answer the following question. Note that the answer is present within the text. Question: What was echoed by Irwin Cotler?
Answer:
accusation