Ablue whale makes a call underwater at the same time as an elephant calls on land. how long will it take eachof these sounds to travel 3 km?

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

Which of the following describes how binary fission and mitosis are similar? a)they are both used for growth or repair b)they both break down membrane-bound nuclei c)both invoke the replication of a single stand of dna d)both replicate genetic material

Why are current extinctions of concern to enviromentalists?