Answer the following question given this paragraph: Savannas Savannas are grasslands with scattered trees, and they are found in Africa, South America, and northern Australia (Figure 20.18). Savannas are hot, tropical areas with temperatures averaging from 24oC 29oC (75oF 84oF) and an annual rainfall of 51127 cm (2050 in). Savannas have an extensive dry season and consequent fires. As a result, scattered in the grasses and forbs (herbaceous flowering plants) that dominate the savanna, there are relatively few trees (Figure 20.20). Since fire is an important source of disturbance in this biome, plants have evolved well-developed root systems that allow them to quickly re-sprout after a fire. Q: What type of landscape has grasslands with scattered trees, are hot and have extensive dry seasons along with fire? Choices: - deserts - arctic - tundra - savannas A:
savannas
(Question)
Answer the following question given this paragraph: The Antibiotic Crisis The word antibiotic comes from the Greek anti, meaning "against," and bios, meaning "life. " An antibiotic is an organismproduced chemical that is hostile to the growth of other organisms. Today's news and media often address concerns about an antibiotic crisis. Are antibiotics that were used to treat bacterial infections easily treatable in the past becoming obsolete? Are there new "superbugs"bacteria that have evolved to become more resistant to our arsenal of antibiotics? Is this the beginning of the end of antibiotics? All of these questions challenge the healthcare community. One of the main reasons for resistant bacteria is the overuse and incorrect use of antibiotics, such as not completing a full course of prescribed antibiotics. The incorrect use of an antibiotic results in the natural selection of resistant forms of bacteria. The antibiotic kills most of the infecting bacteria, and therefore only the resistant forms remain. These resistant forms reproduce, resulting in an increase in the proportion of resistant forms over non-resistant ones. Another problem is the excessive use of antibiotics in livestock. The routine use of antibiotics in animal feed promotes bacterial resistance as well. In the United States, 70 percent of the antibiotics produced are fed to animals. The antibiotics are not used to prevent disease, but to enhance production of their products. Q: The word antibiotic comes from the greek anti, meaning "against," and bios, meaning this? Choices: - bacteria - germ - virus - life A:
(Answer)
life
Ques: Answer the following question given this paragraph: Section Summary 1.1 Physics: An Introduction Science seeks to discover and describe the underlying order and simplicity in nature. Physics is the most basic of the sciences, concerning itself with energy, matter, space and time, and their interactions. Scientific laws and theories express the general truths of nature and the body of knowledge they encompass. These laws of nature are rules that all natural processes appear to follow. Q: Is the most basic what is the most basic of the sciences, concerning itself with energy, matter, space and time, and their interactions? Choices: - experiments - biology - genetics - physics A:
Ans: physics
(Q).
Answer the following question given this paragraph: At the poles, the Sun's rays are least direct. Much of the area is covered with ice and snow, which reflect a lot of sunlight. Temperatures are lowest here. Q: Where are temperatures the lowest? Choices: - over the oceans - at the equator - in asia - at the poles A:
(A).
at the poles
Ques:Answer the following question given this paragraph: Figure 32.21 Supernovas are the source of elements heavier than iron. Energy released powers nucleosynthesis. Spectroscopic analysis of the ring of material ejected by Supernova 1987A observable in the southern hemisphere, shows evidence of heavy elements. The study of this supernova also provided indications that neutrinos might have mass. (credit: NASA, ESA, and P. Challis). Q: What celestial events are the source of elements heavier than iron? Choices: - neutrons - galaxies - Space - supernovas A:

Ans:supernovas
Answer the following question given this paragraph: Q: Ancient greeks mistook what simple sedentary animals for plants? Choices: - parasites - fungi - corals - sponges A:
sponges