Biology, 26.11.2019 10:31, nuclislath7957
There are many types of crabs in the sea. most of them have shells made from chitin, which is different from calcium carbonate (it's actually the same stuff that your fingernails are made of). however, hermit crabs live in shells that are made from calcium carbonate. where do these "houses" come from? do the crabs make them?
Answers: 1
Biology, 22.06.2019 21:00, wrivera32802
Brass gets discoloured in air because of the presence of which of the following gases in air? a. oxygen b. hydrogen sulphide c. carbon dioxide d. nitrogen
Answers: 2
Biology, 22.06.2019 23:20, allysongonzalezlove0
Male-patterned baldness is more common in males as the name suggest. why is this? a. the gene for baldness is on chromosome 5 b. the gene for baldness is on chromosome 1 c. the gene for baldness is on he x chromosome d. the gene for baldness is on the y chromosome
Answers: 2
There are many types of crabs in the sea. most of them have shells made from chitin, which is differ...
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