Recycling:
is expensive
is not an effective means of conservation
can only be done with paper and glass
all of the above

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.

How does friction with the atmosphere affect the speed of an artificial satellite

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?