Answer the following question given this paragraph: In 1905, the physicist Albert Einstein developed a new theory about electromagnetic radiation. The theory is often called the wave-particle theory . It explains how electromagnetic radiation can behave as both a wave and a particle. Einstein argued that when an electron returns to a lower energy level and gives off electromagnetic energy, the energy is released as a discrete "packet" of energy. We now call such a packet of energy a photon . According to Einstein, a photon resembles a particle but moves like a wave. You can see this in the Figure below . The theory posits that waves of photons traveling through space or matter make up electromagnetic radiation. Q: Einstein developed a theory about how electromagnetic radiation can behave as both a wave and what else? Choices: - energy - bacteria - sound - particle A:
particle
Answer the following question given this paragraph: Mutualism is a symbiotic relationship in which both species benefit. An example of mutualism involves goby fish and shrimp (see Figure below ). The nearly blind shrimp and the fish spend most of their time together. The shrimp maintains a burrow in the sand in which both the fish and shrimp live. When a predator comes near, the fish touches the shrimp with its tail as a warning. Then, both fish and shrimp retreat to the burrow until the predator is gone. From their relationship, the shrimp gets a warning of approaching danger. The fish gets a safe retreat and a place to lay its eggs. Q: What is a symbiotic relationship in which both species benefit? Choices: - detrimental - parasitism - inorganic - mutualism A:
mutualism
Q: Answer the following question given this paragraph: Q: What organism carries out only fermentation or anaerobic respiration? Choices: - metabolites - aerobicc enzymes - aldehydes - obligate anaerobes A:
A: obligate anaerobes
Question: Answer the following question given this paragraph: Biodiversity is a measurement of the amount of variation of the species in a given area. More specifically, biodiversity can be defined as the variety of life and its processes, including the variety of living organisms, the genetic differences among them, and the communities and ecosystems in which they occur. Q: What is a measurement of the amount of variation of the species in a given area called? Choices: - ecosystem - population - degradation - biodiversity A:
Answer: biodiversity
*Question*
Answer the following question given this paragraph: Bone tissues include compact bone, spongy bone, bone marrow, and periosteum. Q: Bone tissues include compact bone, spongy bone, bone marrow, and? Choices: - cartilage - esophagus - epithelium - periosteum A:
**Answer**
periosteum
*Question*
Answer the following question given this paragraph: After trees are cut, logging companies often move these materials down a river to a sawmill where they can be shaped into building materials or other products. The logs float on the water because they are less dense than the water they are in. Knowledge of density is important in the characterization and separation of materials. Information about density allows us to make predictions about the behavior of matter. Q: What property allows cut logs to float on water? Choices: - polarity - heat - precipitation - density A:
**Answer**
density