Answer the following question given this paragraph: Q: Unlike the biological species concept, the ecological species concept can accommodate asexual as well as ________ species. Choices: - homosexual - artificial - homologous - sexual A:
sexual
(Question)
Answer the following question given this paragraph: Heat involves the transfer of thermal energy between two bodies that are at different temperatures. If you held a flask containing a reaction that releases energy, you would be able to feel the heat being transferred from the reaction into your hand. A process in which heat is released is referred to as exothermic . Conversely, reactions that absorb energy will remove energy from the surroundings, causing the container to feel cold. For example, dissolving ammonium nitrate in water will significantly lower the water temperature. Processes that absorb energy from their surroundings are called endothermic . Q: The process when heat is released is referred to as what? Choices: - geothermal - endothermic - insular - exothermic A:
(Answer)
exothermic
Ques: Answer the following question given this paragraph: Are there male and female bacteria? How could you tell? Remember, bacteria have just one chromosome; they do not have an X or Y chromosome. So they probably have a very simplified form of reproduction. Asexual reproduction, the simplest and most primitive method of reproduction, involves a single parent and produces a clone , an organism that is genetically identical to the parent. Haploid gametes are not involved in asexual reproduction. A parent passes all of its genetic material to the next generation. All prokaryotic and some eukaryotic organisms reproduce asexually. Q: All prokaryotic and some eukaryotic organisms reproduce through what method, where a parent passes all of its genetic material to the next generation? Choices: - organic reproduction - sexual reproduction - microscopic reproduction - asexual reproduction A:
Ans: asexual reproduction
(Q).
Answer the following question given this paragraph: Evolution that occurs over a short period of time is known as microevolution . It might take place in just a couple of generations. This scale of evolution occurs at the level of the population. The Grants observed evolution at this scale in populations of Darwin's finches. Beak size in finch populations changed in just two years because of a serious drought. Q: Evolution that occurs over a short period of time is known as what? Choices: - short term evolution - pseudoevolution - relatedness - microevolution A:
(A).
microevolution
Ques:Answer the following question given this paragraph: Only a very small percentage of Earth's water is fresh, liquid water on the surface. But that tiny fraction of water is vital. It is needed by humans, plants, and many other living things. Liquid freshwater flows over Earth's surface in streams and rivers. It also forms ponds, lakes, and wetlands. People use freshwater for drinking, washing, and industry. They also use it for fun. How do you use freshwater for fun?. Q: Only a small percent of earth's water is what type, as opposed to saltwater? Choices: - runoff - groundwater - rainwater - fresh A:

Ans:fresh
Ques:Answer the following question given this paragraph: Most animals have an exoskeleton, including insects, spiders, scorpions, horseshoe crabs, centipedes, and crustaceans. Scientists estimate that, of insects alone, there are over 30 million species on our planet. The exoskeleton is a hard covering or shell that provides benefits to the animal, such as protection against damage from predators and from water loss (for land animals); it also provides for the attachments of muscles. As the tough and resistant outer cover of an arthropod, the exoskeleton may be constructed of a tough polymer such as chitin and is often biomineralized with materials such as calcium carbonate. This is fused to the animal's epidermis. Ingrowths of the exoskeleton, called apodemes, function as attachment sites for muscles, similar to tendons in more advanced animals (Figure 33.3). In order to grow, the animal must first synthesize a new exoskeleton underneath the old one and then shed or molt the original covering. This limits the animal's ability to grow continually, and may limit the individual's ability to mature if molting does not occur at the proper time. The thickness of the exoskeleton must be increased significantly to accommodate any increase in weight. It is estimated that a doubling of body size increases body weight by a factor of eight. The increasing thickness of the chitin necessary to support this weight limits most animals with an exoskeleton to a relatively small size. The same principles apply to endoskeletons, but they are more efficient because muscles are attached on the outside, making it easier to compensate for increased mass. Q: What is the term for the hard covering that protects insects, crustaceans, and spiders? Choices: - endoplate - endoskeleton - exoplate - exoskeleton A:

Ans:
exoskeleton