excretory system: removes waste from blood.
respiratory system: obtains oxygen so the energy in the nutrients can be extracted.
circulatory system: transports nutrients from small intestine to the othet tissues.
nervous system: regulates and controls digestive functioning.
( Am not completly sure, but i think this is the answer)
The synthesis of diphenylacetylene from mesostilbene dibromide includes next reactions:
• Bromination of stilbene-it is the reaction of electrophilic adition and bromonium ion is formed as intermedier (meso compound is the product).
• Bimolecular elimination-strong base is used in this reaction (takes away the H) and pi bond is formed.
the answer ito this is rainfall
The plant species that live in the colder environment have some adaptations that makes them survive in that conditions
These plants have a well developed vascular system due to which they have the ability to trap every inch of sunlight available for the process of photosynthesis.
Some of the plants shed their leaves and stay in dormant conditions.
Evergreen trees have thick waxy coating that prevents the loss of water.
The plants that grow in arctic regions are small and they grow close to the ground in a specific shape that helps them to shed snow from them.
