A major point of understanding natural selection is that not all organisms in a population get to reproduce. Consider the word fitness as used in biology. How does this term relate to natural selection?
Based on your answer above, do organisms with higher fitness mean that they have survived to an advanced age? Why or why not?

What role do traits play in affecting an organisms ability to reproduce? finches

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

Due tonight 10 points will mark brain