Ques: Q: What is the term for a period when temperatures are cooler than normal causing glaciers to spread to lower latitudes? Read this paragraph and choose the correct option from the provided answers: But ice ages also occurred many times in the past. An ice age is a period when temperatures are cooler than normal. This causes glaciers to spread to lower latitudes. Scientists think that ice ages occurred at least six times over the last billion years alone. How do scientists learn about Earth's past climates?. Choices: - cooling era - cold age - freezing point - ice age A:
Ans: ice age

Ques: Q: What are fresh water biomes defined by? Read this paragraph and choose the correct option from the provided answers: Freshwater biomes are defined by their low salt concentration, usually less than 1%. Plants and animals in freshwater regions are adjusted to the low salt content and would not be able to survive in areas of high salt concentration, such as the ocean. There are different types of freshwater biomes: ponds and lakes ( Figure below ), streams and rivers, and wetlands. Ponds and lakes range in size from just a few square meters to thousands of square kilometers. Streams and rivers are bodies of flowing water moving in one direction. They can be found everywhere. They get their starts at headwaters , which may be springs, melting snow, or even lakes, and then travel all the way to their mouths , emptying into another water channel or the ocean. Wetlands are areas of standing water that support aquatic plants. Wetlands include marshes, swamps, and bogs. Choices: - high salt content - moving water - animal species - low salt concentration A:
Ans: low salt concentration

Ques: Q: What evolved, adapted response to resource availability is the long-range seasonal movement of animals? Read this paragraph and choose the correct option from the provided answers: Migration Migration is the long-range seasonal movement of animals. It is an evolved, adapted response to variation in resource availability, and it is a common phenomenon found in all major groups of animals. Birds fly south for the winter to get to warmer climates with sufficient food, and salmon migrate to their spawning grounds. The popular 2005 documentary March of the Penguins followed the 62-mile migration of emperor penguins through Antarctica to bring food back to their breeding site and to their young. Wildebeests (Figure 45.35) migrate over 1800 miles each year in search of new grasslands. Choices: - changing - Stagnation - regulating - migration A:
Ans: migration

Ques: Q: What are are organisms that feed on small pieces of organic matter? Read this paragraph and choose the correct option from the provided answers: Deposit feeders, which are organisms that feed on small pieces of organic matter, usually in the top layer of soil. Sea cucumbers are deposit feeders, living on the ocean floor. They eat the tiny scrap particles that are usually abundant in the environments that they inhabit. Choices: - bottom feeders - difference feeders - waste feeders - deposit feeders A:
Ans:
deposit feeders