Ques: Q: What incredibly successful species has quickly colonized almost all of earth’s terrestrial habitats, but also impacted earth, its climate, and its environment?   Read this paragraph and choose the correct option from the provided answers:  The human species has been incredibly successful. In a relatively short period of time, it has colonized almost all of Earth’s terrestrial habitats. Unfortunately, human beings have also impacted Earth, its climate, and its environment. Human actions threaten Earth’s valuable biodiversity.   Choices:  - chimpanzees  - birds  - fish  - humans   A:
Ans: humans

Ques: Q: What is it called when plant roots absorb liquid water and release water vapor into the atmosphere?   Read this paragraph and choose the correct option from the provided answers:  Liquid water is taken up by plant roots. The plant releases water vapor into the atmosphere. This is transpiration.   Choices:  - sedimentation  - evaporation  - perspiration  - transpiration   A:
Ans: transpiration

Ques: Q: What is the primary component of steel alloys?   Read this paragraph and choose the correct option from the provided answers:  Steels are a very important class of alloys. The many types of steels are primarily composed of iron, with various amounts of the elements carbon, chromium, manganese, nickel, molybdenum, and boron. Steels are widely used in building construction because of their strength, hardness, and resistance to corrosion. Most large modern structures like skyscrapers and stadiums are supported by a steel skeleton (see Figure below ).   Choices:  - carbon  - titanium  - alluminum  - iron   A:
Ans: iron

Ques: Q: What part of a mature plant cell is responsible for storing substances like water, enzymes, and salts?   Read this paragraph and choose the correct option from the provided answers:  Most mature plant cells have a large central vacuole . This vacuole can make up as much as 90% of the cell’s volume. The central vacuole has a number of functions, including storing substances such as water, enzymes, and salts. It also helps plant tissues, such as stems and leaves, stay rigid and hold their shape. It even helps give flowers, like the ones in Figure below , their beautiful colors.   Choices:  - little vacuole  - second vacuole  - large vacuole  - central vacuole   A:
Ans:
central vacuole