Which type of telescope uses visible light emitted by a star to make it appear closer?
a) radio
b) ultra violet
c) optical
d) infrared

How can you approximate the number of calories required to keep you in energy balance?

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

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