Between 1940 and 1970 most scientists were already concerned about global warming.

t/f?

Answer

Hi,

FALSE

Explanation

Before 1970, most people started to see the effects of Climate changes such as increasing warming up of the United States and the North Atlantic region. Scientists during this period only suggested that these changes were due to natural cycle with unidentified reasons. After 1970s, scientists developed strong beliefs that greenhouse gases were the cause of increasing global temperature. In 1988, scientist initiated meetings and research on global scale as a positive move to cut greenhouse gas emissions.

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hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds