I’m confuse between A and B but I think it is mostly B
Plants and animals could not live without nitrogen. It is an important part of many cells and processes such as amino acids, proteins, and even our DNA. It is also needed to make chlorophyll in plants, which plants use in photosynthesis to make their food and energy.
Nitrogen is an important component of many essential structural, genetic and metabolic compounds in plant cells. It is also an elementary constituent of numerous important organic compounds including amino acids, proteins, nucleic acids, enzymes, and the chlorophyll molecule.
Of all the essential nutrients, nitrogen is the one that is most often limiting for crop growth. Nitrogen is the nutrient which normally produces the greatest yield response in crop plants, promoting rapid vegetative growth and giving the plant a healthy green color.
The answer would be (b) evolutionary species concept.
New oceanic lithosphere is unable to form at mid ocean ridges. This is False. New oceanic lithosphere is able to form at mid-ocean ridges. This is where the New oceanic lithosphere is usually formed
The answer should be 2 because planting trees gives out oxygen and we need oxygen to live
