Biology, 09.12.2019 03:31 ramose7021
Stromatolites are rocky structures that generally form in shallow waters from the binding of sediment by microbial biofilms. stromatolites are typically hypothesized to be formed from the presence of cells that bind these grains together. if the appearance of the stromatolites in the fossil record were to indicate the emergence of life on earth, approximately how old are the oldest stromatolites on earth? a) 2.6 billion years old b) 3.6 billion years old c) 4.6 billion years old d) 400 million years old
Answers: 2
Biology, 22.06.2019 13:00
Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols
Answers: 1
Biology, 22.06.2019 13:20
Where is the nictitating membrane found? a. between the eyelid and the eyeball b. between the retina and the optic nerve c. between the outer and middle ear d. in the organ of corti in the middle ear
Answers: 2
Biology, 22.06.2019 13:50
18. how do the cells in meiosis differ from the cells in mitosis?
Answers: 2
Stromatolites are rocky structures that generally form in shallow waters from the binding of sedimen...
History, 30.01.2020 20:53
Biology, 30.01.2020 20:53
Mathematics, 30.01.2020 20:53
English, 30.01.2020 20:53
Biology, 30.01.2020 20:53
Mathematics, 30.01.2020 20:53