Answer the following question given this paragraph: Giardia are flagellate protozoa that cause giardiasis . The parasites enter the body through food or water that has been contaminated by feces of infected people or animals. The protozoa attach to the lining of the host's small intestine, where they prevent the host from fully absorbing nutrients. They may also cause diarrhea, abdominal pain, and fever. A picture of a Giardia protozoan opens this concept. Q: What are flagellate protozoa that cause giardiasis? Choices: - diatoms - fungus - plankton - giardia A:
giardia
(Question)
Answer the following question given this paragraph: Intraspecific competition happens when members of the same species compete for the same resources. For example, two trees may grow close together and compete for light. One may out-compete the other by growing taller to get more available light. As members of the same species are usually genetically different, they have different characteristics, and in this example, one tree grows taller than the other. The organism that is better adapted to that environment is better able to survive. The other organism may not survive. In this example, it is the taller tree that is better adapted to the environment. Q: When members of the same species compete for the same resources, it is called what? Choices: - interspecies competition - natural selection - extinction - intraspecific competition A:
(Answer)
intraspecific competition
Ques: Answer the following question given this paragraph: Ecologists also study how individuals in a population are spread across an environment. This spacing of individuals within a population is called dispersion . Some species may be clumped or clustered ( Figure below ) in an area. Others may be evenly spaced ( Figure below ). Still others may be spaced randomly within an area. The population density and dispersion have an effect on reproduction and population size. What do you think the relationship is between population density, dispersion and size?. Q: What is the term for the spacing of individuals within a population? Choices: - suspension - equilibrium - population density - dispersion A:
Ans: dispersion
(Q).
Answer the following question given this paragraph: People divide up the seas into five oceans. But they are really all interconnected. Even so, they are all very different. This ocean is near a shore and is obviously in a cold region. It appears to be a good habitat for whales! No matter what, the oceans have a huge influence on the planet, locally and as a whole. Q: We divide up the earth's seas into five what, which are really all interconnected? Choices: - lakes - continents - ecosystems - oceans A:
(A).
oceans
Ques:Answer the following question given this paragraph: Of all vertebrates, mammals have the biggest and most complex brain for their body size (see Figure below ). The front part of the brain, called the cerebrum , is especially large in mammals. This part of the brain controls functions such as memory and learning. Q: In a mammal the front part of the brain is called the what? Choices: - cerebellum - thallus - brain stem - cerebrum A:

Ans:cerebrum
Ques: Answer the following question given this paragraph: During meiosis, homologous chromosomes separate and go to different gametes. Thus, the two alleles for each gene also go to different gametes. At the same time, different chromosomes assort independently. As a result, alleles for different genes assort independently as well. In these ways, alleles are shuffled and recombined in each parent's gametes. Q: When do homologous chromosomes separate and go to different gametes? Choices: - during electrolysis - before meiosis - after meiosis - during meiosis A:
Ans:
during meiosis