Q: The nitrogen cycle moves nitrogen back and forth between the atmosphere and what? Read this paragraph and choose the correct option from the provided answers: The nitrogen cycle moves nitrogen back and forth between the atmosphere and organisms. Bacteria change nitrogen gas from the atmosphere to nitrogen compounds that plants can absorb. Other bacteria change nitrogen compounds back to nitrogen gas, which re-enters the atmosphere. Choices: - Ocean - Ozone Layer - sediments - organisms A:
organisms

Q: What is the term for movement toward light? Read this paragraph and choose the correct option from the provided answers: Motility The majority of protists are motile, but different types of protists have evolved varied modes of movement (Figure 23.8). Some protists have one or more flagella, which they rotate or whip. Others are covered in rows or tufts of tiny cilia that they coordinately beat to swim. Still others form cytoplasmic extensions called pseudopodia anywhere on the cell, anchor the pseudopodia to a substrate, and pull themselves forward. Some protists can move toward or away from a stimulus, a movement referred to as taxis. Movement toward light, termed phototaxis, is accomplished by coupling their locomotion strategy with a light-sensing organ. Choices: - phototropism - gravitational pull - autolysis - phototaxis A:
phototaxis

Q: Q: Clearing land for agriculture and development is a major cause of what negative result? Read this paragraph and choose the correct option from the provided answers: Clearing land for agriculture and development is a major cause of habitat destruction. Within the past 100 years, the amount of total land used for agriculture has almost doubled. Land used for grazing cattle has more than doubled. Agriculture alone has cost the United States half of its wetlands ( Figure below ) and almost all of its tallgrass prairies. Native prairie ecosystems, with their thick fertile soils, deep-rooted grasses, diversity of colorful flowers, burrowing prairie dogs, and herds of bison and other animals, have virtually disappeared ( Figure below ). Choices: - water destruction - human destruction - mineral destruction - habitat destruction A:
A: habitat destruction

Question: Q: Arteries and veins are two of the three types of blood vessels, what is the third? Read this paragraph and choose the correct option from the provided answers: Blood vessels are long, tube-like organs that form a complex network throughout the body. They transport blood to all the body's cells. There are three types of blood vessels: arteries, veins, and capillaries. Transfer of substances between the blood and cells takes place across the thin walls of capillaries. Choices: - muscles - fibroids - neurons - capillaries A:
Answer: capillaries

*Question*
Q: A unique type of organism is also known as what? Read this paragraph and choose the correct option from the provided answers: A species is a unique type of organism. Members of a species can interbreed and produce offspring that can breed (they are fertile). Organisms that are not in the same species cannot do this. Examples of species include humans, lions, and redwood trees. Can you name other examples?. Choices: - taxonomy - parasites - element - species A:
**Answer**
species

Q: Q: Where are the olfactory organs of snails located? Read this paragraph and choose the correct option from the provided answers: Gastropods include snails and slugs. They use their foot to crawl. They have a well-developed head. There are many thousands of species of sea snails and sea slugs, as well as freshwater snails, freshwater limpets, land snails and land slugs. Gastropods live in many diverse habitats, from gardens to deserts and mountains. They also live in rivers, lakes and the ocean. Most shelled gastropods have a one-piece shell that is typically coiled or spiraled, but not all gastropods have shells. Gastropods have no sense of hearing, but they can see and have a keen sense of smell. In land-based gastropods, the olfactory organs (for smell) are the most important. These are located on the tentacles. Choices: - their feet - their anus - their shell - their tentacles A:
A: their tentacles