Look at the picture of a trilobite. these animals were once present in the ocean but are now completely extinct. what is a likely cause of trilobite extinction? a. something changed to limit and finally abolish their success in this environment. b. something changed that brought these creatures onto land in slightly different form. c. they failed to develop vestigial organs that would have them survive. d. they were no longer able to acquire their necessary characteristics for survival in a changing environment.

Okay so I just took the test and it said the answer is Something changed to limit and finally abolish their success in this environment! I hope this helps!

The best way to tell its true color is to look at the minerals streak

This is s cute awee : (( . well if she's showing you signs that she may like you , then shoot your shot ! don't be afraid . & if you're unsure that she's giving you these signs , then wait out for a little bit . most girls are different . some may act really sweet , but only bc you're a good friend of hers . that , or she might like you . you just never know . but i think you should sit down with her & tell her how you feel . but don't be awkward & shy . just be straight up & tell her how you feel . if the feelings aren't mutual , then don't cry about it . you need to respect her decision & look for others in the world . feelings can be difficult & confusing , but don't be afraid to show them . i say you play it out & if you're still unsure about it , talk to her . - rach