Ascientist finds several hundred fish fossils in the dessert. this evidence best supports which of the following scientific ideas? (3 points)

the fish were left by predatory animals.

the fish evolved limbs for land movement.

the area was once covered in water.

the area was once covered by a glacier.

Iwill give brainiest to first person who gets it ! what are 3 basic types of interactions we see in an ecosystem?

Which of the following describes a difference when gram-positive bacteria are compared to gram-negative bacteria?

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.