Answer the following question given this paragraph: Introduction All life on Earth is related. Evolutionary theory states that humans, beetles, plants, and bacteria all share a common ancestor, but that millions of years of evolution have shaped each of these organisms into the forms seen today. Scientists consider evolution a key concept to understanding life. Natural selection is one of the most dominant evolutionary forces. Natural selection acts to promote traits and behaviors that increase an organism's chances of survival and reproduction, while eliminating those traits and behaviors that are to the organism's detriment. But natural selection can only, as its name implies, selectit cannot create. The introduction of novel traits and behaviors falls on the shoulders of another evolutionary forcemutation. Mutation and other sources of variation among individuals, as well as the evolutionary forces that act upon them, alter populations and species. This combination of processes has led to the world of life we see today. Q: Natural selection cannot create new variations in organisms - these new variations must be created by what, which are usually associated with some sort of abnormality? Choices: - radiation - infection - pollution - mutation A:
mutation
Answer the following question given this paragraph: Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. The difference in the concentrations of the molecules in the two areas is called the concentration gradient . Diffusion will continue until this gradient has been eliminated. Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient. " The end result of diffusion is an equal concentration, or equilibrium , of molecules on both sides of the membrane. Q: What is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration? Choices: - absorption - condensation - secretion - diffusion A:
diffusion
Q: Answer the following question given this paragraph: The rigid crystals of ionic compounds are brittle. They are more likely to break than bend when struck. As a result, ionic crystals tend to shatter easily. Try striking salt crystals with a hammer and you'll find that they readily break into smaller pieces. You can learn more about the properties of ionic compounds by watching the video at this URL:. Q: When struck, how are the rigid crystals of ionic compounds likely to react? Choices: - shrink - bend - grow - break A:
A: break
Question: Answer the following question given this paragraph: The two major types of seed plants are the gymnosperms (seeds in cones) and angiosperms (seeds in ovaries of flowers). Figure below shows how the seeds of gymnosperms and angiosperms differ. Do you see the main difference between the two seeds? The angiosperm seed is surrounded by an ovary . Q: What are the two major types of seed plants called? Choices: - perennials and annuals - flowers and fruits - deciduous and evergreen - gymnosperms and angiosperms A:
Answer: gymnosperms and angiosperms
*Question*
Answer the following question given this paragraph: Climate is the average weather of a place over many years. It includes average temperatures. It also includes average precipitation. The timing of precipitation is part of climate as well. What determines the climate of a place? Latitude is the main factor. A nearby ocean or mountain range can also play a role. Q: What term is used to describe the average weather of a place over many years? Choices: - atmosphere - landscape - meteorology - climate A:
**Answer**
climate
(Question)
Answer the following question given this paragraph: Most ocean waves are caused by winds. A wave is the transfer of energy through matter. A wave that travels across miles of ocean is traveling energy, not water. Ocean waves transfer energy from wind to the water. The energy is transferred from one water molecule to the next. The energy of a wave may travel for thousands of miles. The water itself moves very little. The picture below shows how water molecules move when a wave goes by ( Figure below ). Once the wave starts, it doesn't need more wind to keep it going. Q: A wave is the transfer of energy through what else? Choices: - liquid - air - gas - matter A:
(Answer)
matter