Which of the following is an opinion about the ISS? Group of answer choices.

More than 20 countries have helped build and maintain it

It proves that space travel is worth the time and effort

Many scientific experiments are carried out onboard

The Columbia space shuttle disaster caused delays in its construction

Gold is not now being extracted from seawater. why not? a. it would be too disruptive to marine life to develop any marine mineral resources b. there is no gold in seawater c. we don't know how to extract minerals from seawater d. it would be too costly and difficult to separate the small amount of gold from the very large amounts of halite and other minerals

Which movement developed in the early 1900s and encouraged the nationalist spirit of africans throughout the world? a. african nationalist b. tribalism c. pan-africanism d. african union

Which phrase describes the time it takes for a planet to make a complete rotation