Which is the first step that geologists must do to compare rock layers at distant locations? A) find the absolute age of rocks at both locations

B) compare a layer at one location to layers at other locations

C) identify index fossils in one or more layers at one location

D) collect fossils from different locations to study the organisms' lifestyles

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.

b ti isnfornopgnoernfrof

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.