Which of the following are examples of sexual reproduction? A pollen grain from one flower fertilizes another flower, resulting in the development of a seed.
A piece of a starfish is broken off and grows into a new starfish in a process called regeneration.
A bacterium copies its DNA and divides into two daughter cells in a process called binary fission.
A yeast offspring grows out of the body of its parent in a process called budding.
A frog releases sperm over eggs that were laid by another frog, and these cells fuse together.

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