Animals began to make an impact on land by _____ million years ago.

Important Related MCQs:

• Animals are classified into how many main groups?
• Animals belonging to phylum Cnidaria have cavity known as ______?
• Animals have ____ the ability to disperse as compare to plants.
• Animals reserved energy stored in
• Passage: The 21th century is the century of sophisticated technology and science. Technology and science began to make progress in the seventeenth century.
• An object attached to one end of a spring makes 20 vibrations in 10s. It's frequency is?
• Make the antonym by adding the prefix with "Adequate"?
• Make the antonym by adding the prefix with "Complete"?
• To make a clean breast of means?
• To make a clean breast of something is to _____?