Which statement best illustrates a biotic or an abiotic factor that is often found in a city park? decaying leaves are an abiotic factor because they are not living. rocks are an abiotic factor because they have never been alive. water in ponds is a biotic factor, because it provides a habitat for living things. oxygen is a biotic factor, because it is required for life and found in all living things.

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

The mixture of sperm and fluids from the seminal vesicles, prostate gland, and cowper's glands is called

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?