Biology, 24.07.2019 01:30 cookiee1387
Identify the appropriate time period where vascular plants with woody tissues, seeds, and veins shared the land with spiders, scorpions, insects, and crustaceans, while jawed fish cruised the oceans and the first amphibians left water to visit land. middle proterozoic late mesozoic. early cenozoic. middle paleozoic.
Answers: 1
Biology, 21.06.2019 17:00, birdwithpurpleboots
What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?
Answers: 1
Biology, 22.06.2019 15:00, Gunn2368
Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.
Answers: 1
Biology, 22.06.2019 18:30, ellamai16
On a spring day, a middle-latitude city (about 40? north latitude) has a surface (sea-level) temperature of 10 ? c. if vertical soundings reveal a nearly constant environmental lapse rate of 6.5 ? c per kilometer and a temperature at the tropopause of –55 ? c, what is the height of the tropopause?
Answers: 3
Identify the appropriate time period where vascular plants with woody tissues, seeds, and veins shar...
History, 16.12.2019 01:31
History, 16.12.2019 01:31