Q: Fermat's principle states that what will always take the path that takes the least amount of time? Read this paragraph and choose the correct option from the provided answers: Light is a wave of changing electric and magnetic fields. Light waves are caused by disturbances in an electromagnetic field, like the acceleration of charged particles (such as electrons). Light has a dual nature; at times, it acts like waves, while at other times it acts like particles, called photons . Light travels through space at the maximum speed allowed by the laws of physics, called the speed of light. Light has no mass, but it carries energy and momentum. Fermat's principle states that light will always take the path that takes the least amount of time (not distance). Choices: - sound - wind - electricity - light A:
light

(Question)
Q: What type of organism was the only able to live in the anoxic atmosphere of the first 2 billion years? Read this paragraph and choose the correct option from the provided answers: CHAPTER SUMMARY 22.1 Prokaryotic Diversity Prokaryotes existed for billions of years before plants and animals appeared. Hot springs and hydrothermal vents may have been the environments in which life began. Microbial mats are thought to represent the earliest forms of life on Earth, and there is fossil evidence of their presence about 3.5 billion years ago. A microbial mat is a multi-layered sheet of prokaryotes that grows at interfaces between different types of material, mostly on moist surfaces. During the first 2 billion years, the atmosphere was anoxic and only anaerobic organisms were able to live. Cyanobacteria evolved from early. Choices: - aerobic - protists - mammals - anaerobic A:
(Answer)
anaerobic

Ques: Q: Carefully controlling the speed of a fission reaction produces what kind of energy? Read this paragraph and choose the correct option from the provided answers: Nuclear energy is produced by carefully controlling the speed of a fission reaction. Choices: - chemical - atomic - thermal - nuclear A:
Ans: nuclear

(Q).
Q: Cnvs result from regions of what being duplicated or deleted inconsistently within the population? Read this paragraph and choose the correct option from the provided answers: Choices: - genes - cytoplasm - DNA - genome A:
(A).
genome

Ques:Q: What are nutrients the body needs in relatively large amounts called? Read this paragraph and choose the correct option from the provided answers: Nutrients the body needs in relatively large amounts are called macronutrients . They include carbohydrates, proteins, lipids, and water. All macronutrients except water can be used by the body for energy. (The energy in food is measured in a unit called a Calorie . ) The exact amount of each macronutrient that an individual needs depends on many factors, including gender and age. Recommended daily intakes by teens of three macronutrients are shown in Table below . Based on your gender and age, how many grams of proteins should you eat each day?. Choices: - adulterants - abundances - vitamins - macronutrients A:

Ans:macronutrients

Question: Q: Where on the earth's surface does the water cycle takes place? Read this paragraph and choose the correct option from the provided answers: The water cycle takes place on, above, and below Earth's surface. In the cycle, water occurs as water vapor, liquid water, and ice. Many processes are involved as water changes state in the cycle. The atmosphere is an exchange pool for water. Ice masses, aquifers, and the deep ocean are water reservoirs. Choices: - on , below , and below - for , above , and below - inside,under,above - on, above, and below A:
Answer:
on, above, and below