Some structures, like the leg bones in the modern day whale, no longer have a useful
function but it is believed that once upon a time they did have a specific function. These
type of structures are called:

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

If there is another new infectious disease somewhere in the world, what do you think canadian officials should do

Draw the conjugate acid for the following base. remember to include charges and non-bonding electrons where necessary.