Chordates (phylum Chordata) are animals which are either vertebrates or one of several closely related invertebrates. They are united by having, for at least some period of their life cycle, a notochord, a HOLLOW DORSAL NERVE CORD
B - Hydrogen Bond
A and D are incorrect as these are bonds either between metals and nonmetals or non metals and non metals. C is incorrect as this term is a joining of sugar molecules.
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Y chromosome found in males which influence the degree of maleness
Answer:
Archaebacteria have cell wall made of complex composition of peptidoglycan
Air, water, some kind of food or sustenance <span />
