Which of the following correctly describes the structure of tRNA? A. 3 base codon one the bottom, Amino acid attachment site on top, held together by Hydrogen bonds B. 3 base codon one the bottom, Amino acid attachment site on top, phosphate groups on the left and right sides C. 3 base anticodon one the bottom, Amino acid attachment site on top, held together by Disulfide bonds D. 3 base anticodon one the bottom, Amino acid attachment site on top, held together by Hydrogen bonds

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs