Question 1 of 34 Why is peat considered a nonrenewable energy resource?
A. It takes millions of years to form.
B. When burned, it contributes to global warming.
C. It can be replenished within a person's lifetime.
D. When burned, it adds pollutants to the air.
SUBMIT

Which organelle releases chemicals that break down large food particles into smaller ones?

Which organelle breaks down sugar molecules that supply energy to the cell ?

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