Answer the following question given this paragraph: Segmentation evolved next. This is a division of the body into multiple segments. Both the earthworm and ant pictured in Figure below have segmented bodies. This trait increases flexibility. It permits a wider range of motion. All annelids and arthropods are segmented. Arthropods also evolved jointed appendages. For example, they evolved jointed legs for walking and "feelers" (antennae) for sensing. Q: What is the division of the body into multiple parts called? Choices: - compression - transverse - organ-level organization - segmentation A:
segmentation
(Question)
Answer the following question given this paragraph: 21.3 Preserving Biodiversity Five mass extinctions with losses of more than 50 percent of extant species are observable in the fossil record. Recent extinctions are recorded in written history and are the basis for one method of estimating contemporary extinction rates. The other method uses measures of habitat loss and species-area relationships. Estimates of contemporary extinction rates vary but are as high as 500 times the background rate, as determined from the fossil record, and are predicted to rise. There is a legislative framework for biodiversity protection. International treaties such as CITES regulate the transportation of endangered species across international borders. Legislation within individual countries protecting species and agreements on global warming have had limited success; there is at present no international agreement on targets for greenhouse gas emissions. In the United States, the Endangered Species Act protects listed species but is hampered by procedural difficulties and a focus on individual species. The Migratory Bird Act is an agreement between Canada and the United States to protect migratory birds. The non-profit sector is also very active in conservation efforts in a variety of ways. Conservation preserves are a major tool in biodiversity protection. Presently, 11 percent of Earth's land surface is protected in some way. The science of island biogeography has informed the optimal design of preserves; however, preserves have limitations imposed by political and economic forces. In addition, climate change will limit the effectiveness of present preserves in the future. A downside of preserves is that they may lessen the pressure on human societies to function more sustainably outside the preserves. Habitat restoration has the potential to restore ecosystems to previous biodiversity levels before species become extinct. Examples of restoration include reintroduction of keystone species and removal of dams on rivers. Zoos have attempted to take a more active role in... Q: Removal of dams on rivers is an example of what? Choices: - evolution - reproduction - renewal - restoration A:
(Answer)
restoration
Ques: Answer the following question given this paragraph: Q: What organism are resistant to freezing and drying and also are metabolically inactive? Choices: - giardia - spirogyra - trichina - zygosporangia A:
Ans: zygosporangia
(Q).
Answer the following question given this paragraph: From Genotype to Phenotype Each human body cell has a full complement of DNA stored in 23 pairs of chromosomes. Figure 28.24 shows the pairs in a systematic arrangement called a karyotype. Among these is one pair of chromosomes, called the sex chromosomes, that determines the sex of the individual (XX in females, XY in males). The remaining 22 chromosome pairs are called autosomal chromosomes. Each of these chromosomes carries hundreds or even thousands of genes, each of which codes for the assembly of a particular proteinthat is, genes are "expressed" as proteins. An individual's complete genetic makeup is referred to as his or her genotype. The characteristics that the genes express, whether they are physical, behavioral, or biochemical, are a person's phenotype. You inherit one chromosome in each paira full complement of 23from each parent. This occurs when the sperm and oocyte combine at the moment of your conception. Homologous chromosomesthose that make up a complementary pairhave genes for the same characteristics in the same location on the chromosome. Because one copy of a gene, an allele, is inherited from each parent, the alleles in these complementary pairs may vary. Take for example an allele that encodes for dimples. A child may inherit the allele encoding for dimples on the chromosome from the father and the allele that encodes for smooth skin (no dimples) on the chromosome from the mother. Q: A complementary pair of chromosomes have genes for the same characteristics in the same location on the chromosome are known as? Choices: - analogous chromosomes - endroctyne chromosomes - symbiotic chromosomes - homologous chromosomes A:
(A).
homologous chromosomes
Ques:Answer the following question given this paragraph: Q: High per capita use of what means the ecological footprint of the united states is large? Choices: - food - money - green energy - resources A:

Ans:resources
Ques: Answer the following question given this paragraph: A third difference between plant and animal cells is that plants have several kinds of organelles called plastids . And there are several different kinds of plastids in plant cells. For example, Chloroplasts are needed for photosynthesis, leucoplasts can store starch or oil, and brightly colored chromoplasts give some flowers and fruits their yellow, orange, or red color. It is the presence of chloroplasts and the ability to photosynthesize, that is one of the defining features of a plant. No animal or fungi can photosynthesize, and only some protists are able to. The photosynthetic protists are the plant-like protists, represented mainly by the unicellular algae. Q: Chloroplasts, leucoplasts and chromoplasts are found in what type of cells? Choices: - nitrogen cells - animal cells - man-made cells - plant cells A:
Ans:
plant cells