Study this image of a geologic time scale
How long ago did invertebrates become common on Earth
ERA
PERIOD
MILLIONS OF
YEARS AGO
KEY EVENTS
Humans evolve
Qualorary
Torta
1.6 million years ago
132 million years ago
410 million years ago
520 million years ago
Cretace
Extinction of
Ons
TE
Para
Carbon
con
Invers
become common
Errente

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream? the ability to attract prey by glowingextra gills, for oxygen extractionthe ability to grow largerextra fat, for warmth

Which sentence is an example of a strong conclusion to an autobiography? a. i stayed after school three days in a row to practice onstage in the auditorium. b. i knew i would have to practice all week to memorize my dance for the recital. c. after the recital was over, i knew practicing was worth it, and i was looking forward to my next big challenge. d. on opening night, i danced in front of a packed auditorium.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen