By studying fossils, scientists have learned that
neither animals nor plants have changed over time.
both animals and plants have changed over time.
animals have changed over time, but plants have not.
plants have changed over time, but animals have not.

What are the characteristics of living things

When a doggo starts to pace around in the same line for a hand full of days. what would that mean?

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