We believe that modern birds evolved from feathered dinosaurs. if we find the fossil of a feathered dinosaur in a higher strata than the fossil of a bird, does this invalidate the idea that this evolution occurred? explain fully. (i dont understand what this question is asking. )

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

Agroup of organisms that changes over time is said to

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.