Question 4 An arctic weather balloon is filled with 32.0L of helium gas inside a prep shed. The temperature inside the shed is . The balloon is then taken outside, where the temperature is . Calculate the new volume of the balloon.

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Environmental differences within ecosystems are generally caused by

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?