PLEASE HELP! Darwin suggested that evolution occurred at a steady, relatively slow rate. Today m, scientists cite fossil evidence to support which revision of Darwin’s suggestion?
A. Evolution occurs slowly in the ocean and rapidly on land.
B. Evolution occurs slowly at the molecular level and rapidly at the organism level.
C. Evolution occurs slowly in some classes and rapidly in other classes.
D. Evolution may sometimes occur very rapidly, in any clade and at any time.

Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens