26. In the relationship between a raccoon and a crayfish in a stream, the crayfish is: A. a producer.
C. a decomposer.
B. the predator.
D. the prey.

Which of the following correctly list the first appearance of organism in the fossil record from earliest to most recent

First problem: for each of the following sequences, fill in the mrna sequence, the amino acid sequences, and the rrna anticodonsthat have been left blank.a) dna: atácga aatcgcgatcgcggcgattoggb) mrna: ? c)codon: ? d)anticodon: ? e)amino acids: ? second problem: see abovea) dna: titaoggccatgaggga a tagtig gillarib)mrna: ? c) codon: ? d)anticodon: ? e) amino acids: ? third problem: see abovea) dna: tacgggcctat acgctactactca tgsatcggb) mrna: ? c)codon: ? d)anticodon: ? e)amino acids: ?

What type of plant is good for a bioassay and where can i buy it? i only have a month.