Answer:
A.The hole in the ozone layer
Explanation:
• Montreal protocol is an international treaty that was signed to control the use of substances that are resulting in the depletion of the ozone hole.
This treaty was signed in the year 1987 and became effective form 1989.
• Since the time that this treaty has come into force, there has been a significant improvement in the ozone hole that was observed over Antarctic as it's size has decreased.
• This improvement has been possible because the treaty helped to phase out chemicals such as chlorofluorocarbons, carbon tetrachloride, etc. that are responsible for ozone hole depletion.
Addiction is a condition of compulsive drug seeking and use, even with negative consequences is a <u>true</u> statement.
Explanation:
Addiction to drugs is a chronic and a relapsing condition or disorder which results in compulsory drug seeking behavior and its continuous use despite knowing about or having negative consequences it can cause to the brain and the body systems.
This is both a medical and a mental illness due to repeatedly misusing drugs or other substances and a severe form of a spectrum of substance abuse disorders.
Addiction is classified under substance use disorder and is categorized as mild, moderate or severe according to the symptoms. The symptoms or the negative consequences of addiction are generally grouped as impaired control, risky use, social impairment, pharmacological criteria for drug tolerance or withdrawal.
1a. Pseudopodia means false feet these are irregular projections found in organisms like amoeba,they help the organism in locomotion capture food etc
1b.a good vacuole is a membrane-enclosed cell vacuole with a digestive system,containing material taken up in by the process of phagocytosis.these are found in amoeba,Protozoa,paramecium
2.the ingestion of bacteria or other material by phagocytes and amoeboid protozoans (wasn’t sure for this one so I had to research)
3.amoeba takes in nutrition by the process called phagocytosis.in this process,a solid food particle is first surrounded by pseudopodia (cytoplasmic filled projection of cell membrane) and forms a vacuole called as Phagosome
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All cellular activities that require energy use ATP as a source of energy.
