Biology, asked by asthadarnal55, 1 day ago

what was the chemical composition of the cretaceous period?

Answers

Answered by stutitripathi

2

Answer:

The atmosphere of the Earth 80 million yearss ago was discovered to have 50 percent more oxygen than modern air. Brenner and Landis found that for all gas samples taken from amber 80 million years old the oxygen content ranged between 25% to 35% and averaged about 30% oxygen. Cretaceous air was supercharged with oxygen

Previous Question

Next Question

Similar questions

English, 13 hours ago

Read the article "Voyages of Discovery:" Centuries ago, countries sponsored explorers to set sail for parts unknown and return with tales of new lands. These explorations led the Europeans to discover North America. The ocean journey from England, France, or Spain to North America was 3,000 miles of unknown dangers, but it led to discoveries. Explorers made these treacherous voyages for three...

English, 13 hours ago

Who is the current chief minister of h.p...

Social Sciences, 13 hours ago

Fill in the blanks. Rural administrative work of the government related to maintaining ___and___ and the second to maintaining___...

Math, 1 day ago

(p+q+r)³ - p³ -q³- r³ please say the formula of this...

India Languages, 1 day ago

হাই ভোজ বালা কুন্তি কে না জানে তারে স্বৈরিনী বক্তার এমন মন্তব্যের কারন কি? বক্তা কেন কুন্তীর বৌমাকে শাশুড়ির যোগ্য বধু বলেছেন। ...

English, 8 months ago

Fill in the blanks with the correct form of the verb given. (1×3) a) The train ---------- already. (leave) b) My birthday------ on 25th January, every year. (fall ) c) The patient-------- before the doctor came. (die)...

Hindi, 8 months ago

what is the algebra ......................

Math, 8 months ago

Draw an equilateral triangle on anyone side of a square. Also draw an equilateral triangle on the diagonal of the square. Calculate the area of both the triangles using Heron’s formula only. Compare their areas and write as a ratio.