The answer is D all of the above
In general, plant sources of protein provide less absorbable forms of iron, zinc, and calcium as compared to animal protein sources.
Carbon dating is a variety of radioactive dating which is applicable only to matter which was once living and presumed to be in equilibrium with the atmosphere, taking in carbon dioxide from the air for photosynthesis.
Answer:
fertile soil contains more amount of water as compared to barren or infertile soil..
Answer:
Biotic factors include plants, animals, and microbes; important abiotic factors include the amount of sunlight in the ecosystem, the amount of oxygen and nutrients dissolved in the water, proximity to land, depth, and temperature. Sunlight is one of the most important abiotic factors for marine ecosystems