B. Ecosystem. By definition, an ecosystem is composed of both its abiotic and biotic factors. A community is the population of living organisms in an ecosystem, and a habitat is the generally abiotic location in which the community lives, so "ecosystem" can also be thought of as the inclusion of a community and habitat together. "Pure culture" would more closely describe a population that you might grow on a Petri dish, for instance.
Answer: True
Explanation:
Pectoralis major is a thick, fan-shaped muscle contributing to the thoracobrachial motion. It consists of group of fibers superior, a clavicular part and a sternal part, both converging to a flat tendon that inserts on the humerus. It's engrafted by both medial and lateral pectoral nerves.
Albinism is a recessive trait characterized by an absence of pigment melanin responsible for skin and hair color. Actually, albinism is caused by a defect in gene for enzyme which synthesizes melanin. The central dogma of molecular biology explains that the sequence of DNA specifies the sequence of mRNA, which, further, specifies codes for the sequence of proteins. Since a gene is a segment of DNA, altered gene will cause altered mRNA which will cause altered protein. Thus, <span>defect in gene for enzyme which synthesizes melanin will cause the absence of melanin and consequently, albinism.</span>
Answer:symbol for atomic no is(Z) and for mass no is (A).
Explanation: