Answer the following question given this paragraph: An estuary is a partly enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the ocean. Estuaries can be thought of as the most biologically productive regions on Earth, with very high biodiversity. Estuaries are zones where land and sea come together, and where fresh and salt water meet. Q: What can be thought of as the most biologically productive regions on earth? Choices: - swamps - forests - coasts - estuaries A:
estuaries
(Question)
Answer the following question given this paragraph: Note that in fragmentation, there is generally a noticeable difference in the size of the individuals, whereas in fission, two individuals of approximate size are formed. Parthenogenesis Parthenogenesis is a form of asexual reproduction where an egg develops into a complete individual without being fertilized. The resulting offspring can be either haploid or diploid, depending on the process and the species. Parthenogenesis occurs in invertebrates such as water flees, rotifers, aphids, stick insects, some ants, wasps, and bees. Bees use parthenogenesis to produce haploid males (drones) and diploid females (workers). If an egg is fertilized, a queen is produced. The queen bee controls the reproduction of the hive bees to regulate the type of bee produced. Some vertebrate animalssuch as certain reptiles, amphibians, and fishalso reproduce through parthenogenesis. Although more common in plants, parthenogenesis has been observed in animal species that were segregated by sex in terrestrial or marine zoos. Two female Komodo dragons, a hammerhead shark, and a blacktop shark have produced parthenogenic young when the females have been isolated from males. Q: In which kind of animals does parthenogenesis occur? Choices: - tissues - mammals - species - invertebrates A:
(Answer)
invertebrates
Ques: Answer the following question given this paragraph: Q: The effects of which kind of selection are larger than the effects of direct natural selection on individuals? Choices: - topical selection - stranger selection - unnatural selection - kin selection A:
Ans: kin selection
(Q).
Answer the following question given this paragraph: The coordination sphere consists of the central metal ion or atom plus its attached ligands. Brackets in a formula enclose the coordination sphere; species outside the brackets are not part of the coordination sphere. The coordination number of the central metal ion or atom is the number of donor atoms bonded to it. The coordination number for the silver ion in [Ag(NH3)2]+ is two (Figure 19.14). For the copper(II) ion in [CuCl4]2, the coordination number is four, whereas for the cobalt(II) ion in [Co(H2O)6]2+ the coordination number is six. Each of these ligands is monodentate, from the Greek for "one toothed," meaning that they connect with the central metal through only one atom. In this case, the number of ligands and the coordination number are equal. Q: The coordination sphere consists of the central metal ion or atom plus its attached what? Choices: - subunits - strands - molecules - ligands A:
(A).
ligands
Ques:Answer the following question given this paragraph: Mutations, a change in the DNA or RNA sequence, may have no effect, may be beneficial or may be harmful. There are numerous ways that the genetic information can be changed. Some of these changes can be inherited. In multicellular organisms, mutations can be subdivided into germline mutations , which can be passed on to descendants, and somatic mutations , which cannot be transmitted to the next generation. Germline mutations change the DNA sequence within a sperm or egg cell, and therefore can be inherited. This inherited mutation may result in a class of diseases known as a genetic disease. The mutation may lead to a nonfunctional protein, and the embryo may not develop properly or survive. Somatic mutations may affect the proper functioning of the cell with the mutation. During DNA replication, the mutation will be copied. The two daughter cells formed after cell division will both carry the mutation. This may lead to the development of many cells that do not function optimally, resulting a less than optimal phenotype. Various types of mutations can all have severe effects on the individual. These include point mutations, framehift mutations and chromosomal alterations. Keep in mind, some mutations may be beneficial or have no effect. Mutations that have no effect will not affect the expression of the gene or the sequence of amino acids in an encoded protein. Q: What do you call a change in the dna or rna sequence? Choices: - degradation - adaptation - infection - mutation A:

Ans:mutation
Ques: Answer the following question given this paragraph: Each type of rock weathers in its own way. Certain types of rock are very resistant to weathering. Igneous rocks tend to weather slowly because they are hard. Water cannot easily penetrate them. Granite is a very stable igneous rock. Other types of rock are easily weathered because they dissolve easily in weak acids. Limestone is a sedimentary rock that dissolves easily. When softer rocks wear away, the more resistant rocks form ridges or hills. Q: Hard igneous rocks and easily dissolved sedimentary rocks respond very differently to what natural force? Choices: - gravity - sunlight - evaporation - weathering A:
Ans:
weathering