Answer the following question given this paragraph: Competitive Exclusion Principle Resources are often limited within a habitat and multiple species may compete to obtain them. All species have an ecological niche in the ecosystem, which describes how they acquire the resources they need and how they interact with other species in the community. The competitive exclusion principle states that two species cannot occupy the same niche in a habitat. In other words, different species cannot coexist in a community if they are competing for all the same resources. An example of this principle is shown in Figure 45.24, with two protozoan species, Paramecium aurelia and Paramecium caudatum. When grown individually in the laboratory, they both thrive. But when they are placed together in the same test tube (habitat), P. aurelia outcompetes P. caudatum for food, leading to the latter's eventual extinction. Q: Which principle states that two species cannot occupy the same niche in a habitat? Choices: - complete exclusion - produce exclusion - tough exclusion - competitive exclusion A:
competitive exclusion
Answer the following question given this paragraph: Another kind of respiration takes place within body cells. This kind of respiration is called cellular respiration. It's the process in which cells obtain energy by "burning" glucose. Both types of respiration are connected. Cellular respiration uses oxygen and produces carbon dioxide. Respiration by the respiratory system supplies the oxygen needed for cellular respiration. It also removes the carbon dioxide produced by cellular respiration. Q: Respiration that occurs in the cells is called? Choices: - electromagnetic respiration - plasma respiration - biological respiration - cellular respiration A:
cellular respiration
Q: Answer the following question given this paragraph: The type of chemical signal a cell will send differs depending on the distance the message needs to go. For example, hormones , ions, and neurotransmitters are all types of signals that are sent depending on the distance the message needs to go. Endocrine signals are hormones, produced by endocrine organs. These signals travel through the blood stream to reach all parts of the body. Q: Hormones, ions, and neurotransmitters are all types of what? Choices: - nutrients - pathogens - proteins - chemical signals A:
A: chemical signals
Question: Answer the following question given this paragraph: In this chapter, we aim to understand and explain the parabolic motion of a thrown object, known as projectile motion. Motion in one direction is unrelated to motion in other perpendicular directions. Once the object has been thrown, the only acceleration is in the (up/down) direction. The (right/left) direction velocity remains unchanged. Q: What is another term for the parabolic motion of a thrown object? Choices: - newtonian motion - regular motion - simple motion - projectile motion A:
Answer: projectile motion
*Question*
Answer the following question given this paragraph: Climate is the average weather in an area over a long period of time. Weather refers to the conditions of the atmosphere from day to day. Climate is generally described in terms of temperature and moisture. Q: What term refers to the conditions of the atmosphere from day to day? Choices: - climate - temperture - humidity - weather A:
**Answer**
weather
*Question*
Answer the following question given this paragraph: Roots: Support for the Plant Roots are not well preserved in the fossil record; nevertheless, it seems that they did appear later in evolution than vascular tissue. The development of an extensive network of roots represented a significant new feature of vascular plants. Thin rhizoids attached the bryophytes to the substrate. Their rather flimsy filaments did not provide a strong anchor for the plant; neither did they absorb water and nutrients. In contrast, roots, with their prominent vascular tissue system, transfer water and minerals from the soil to the rest of the plant. The extensive network of roots that penetrates deep in the ground to reach sources of water also stabilizes trees by acting as ballast and an anchor. The majority of roots establish a symbiotic relationship with fungi, forming mycorrhizae. In the mycorrhizae, fungal hyphae grow around the root and within the root around the cells, and in some instances within the cells. This benefits the plant by greatly increasing the surface area for absorption. Leaves, Sporophylls, and Strobili A third adaptation marks seedless vascular plants. Accompanying the prominence of the sporophyte and the development of vascular tissue, the appearance of true leaves improved photosynthetic efficiency. Leaves capture more sunlight with their increased surface area. In addition to photosynthesis, leaves play another role in the life of the plants. Pinecones, mature fronds of ferns, and flowers are all sporophyllsleaves that were modified structurally to bear sporangia. Strobili are structures that contain the sporangia. They are prominent in conifers and are known commonly as cones: for example, the pine cones of pine trees. Q: The larger surface area of leaves allows them to capture more what? Choices: - pollen - molecules - chlorophyll - sunlight A:
**Answer**
sunlight