*80 points*transitional fossils are fossils of organisms that have characteristics of their ancestors’ species and their descendants’ species. why do you think these fossils are important to the study of evolution? do you think the word transitional is a scientifically appropriate description for these fossils? knowing how fossils form, do you think it’s likely that humans will ever piece together a complete fossil record for every species that ever existed on earth? why or why not?

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important