Which of the following must be true to consider something to be alive? it must be able to replicate its dna be it must be able to respond to light see it must be able to convert energy from one form to another the it must be able to move

Plz plz plz quick! 49 points for whoever which of the following statements about greenhouse effect is true? *life on earth is suffering because of greenhouse effect *the greenhouse effect is caused by human activity *all greenhouse gases are harmful *life on earth would not exist without the greenhouse effect

What is the answer for the complicated molecules that make up living things usually contain carbon. why is carbon so important in these molecules?

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above