The conferences are held both on National and International levels to address the matter concerning for the global environment. Global warming is the major concern for the entire world. The 1987 Montreal Protocol was also held in this context and was signed to address which one of the following? top green house effect

Conservation of wild life

To reduce the release of CFC gas

To ban nuclear testing

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