Several international organizations monitor the position of space debris larger than 10 centimeters across to ensure safe space travel. _______ those efforts are not sufficient, as there are about twenty times as many smaller objects that are moving at speeds fast enough to damage even a heavily protected spacecraft.Which choice completes the text with the most logical transition?

Pollution is a real concern not just on our planet but beyond it as well. Earth’s outer atmosphere is littered with human-generated debris. As a result, spacecraft and satellites are vulnerable to collision with this debris. The moon and other planets, _______ retain abandoned human-generated equipment.Which choice completes the text with the most logical transition?

n the game of chess, when a piece is in danger of being captured by an opponent, players may move their piece to a designated “flight square” to protect their piece and ------- their opponent’s strategy. Which choice completes the text with the most logical and precise word or phrase?facilitateeliminateencourageeliminatealleviateeliminateimpede

The Chilean volcano Calabozos is located in __________ area. Therefore, the risk of loss of human life in the event of an eruption is minimal.Which choice completes the text with the most logical and precise word or phrase?

Research conducted by planetary scientist Katarina Miljkovic suggests that the Moon’s surface may not accurately _______early impact events. When the Moon was still forming, its surface was softer, and asteroid or meteoroid impacts would have left less of an impression; thus, evidence of early impacts may no longer be present.Which choice completes the text with the most logical and precise word or phrase?

Which of the following terms describes any object that revolves around a larger object in space?3124382f6264cecb127e247e16bf37a8.webm91 KB amoon bsatellite cplanet dasteroid