Perseverance was the third robotic visitor from Earth to arrive at Mars in February 2021. Earlier this month, two other spacecraft, Hope from the United Arab Emirates and Tianwen-1 from China, entered orbit around Mars. Why is there so much interest in Mars? How are the three missions similar and different? Review the infographic for inspiration.

Match the types of competition to their descriptions.

Which short-term environmental changes would a very small asteroid or comet impact on earth most likely cause? check all that apply. flooding extinction craters on surface changes in weather patterns death of organisms and populations

Describe the change in phase and temperature as water moves from the oceans to the atmosphere and then returns to earth again as rain. a) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature decreases b) evaporation : temperature increases; condensation : temperature decreases; precipitation (rain) : temperature increases c) evaporation : temperature decreases; condensation : temperature decreases; precipitation (rain) : temperature decreases d) evaporation : temperature increases; condensation : temperature increases; precipitation (rain) : temperature decreases