subject
Biology, 08.01.2020 18:31 KaleahV

How do we know what the make-up of air was like in the past?

ansver
Answers: 3

Other questions on the subject: Biology

image
Biology, 22.06.2019 09:30, ceeejay0621
Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.
Answers: 1
image
Biology, 22.06.2019 14:30, kaybug27
What is the most common structure of volcanoes?
Answers: 1
image
Biology, 22.06.2019 19:30, wolfiewolffromsketch
Forensic scientists think they know the identity of a skeleton. what rule should they use to select a relative whose dna could be used to try to confirm the identity?
Answers: 3
image
Biology, 22.06.2019 21:00, ddaaaeeee2960
Amoeba proteus is injected with a drug that inhibits the formation of microtubules. what effect does this have on the organism’s movement?
Answers: 2
You know the right answer?
How do we know what the make-up of air was like in the past?...

Questions in other subjects:

Konu
Mathematics, 30.09.2019 10:50
Konu
Biology, 30.09.2019 10:50