And igneous rock sample is about 250,000 years old. Would you use uranium-lead radiometric dating to find its age?Answer:
Explanation:
Answer:
Hydroxide ion OH-
Explanation:
Bases are bitter in taste, slippery in touch and turns red litmus paper to blue. They contains hydroxide ion OH- and when they are dissolved in water, bases produces this ion. The production of hydroxide ion determines that a solution is basic in nature. When base is reacted with acid, in most of the case the resultant product is water as the H+ ion from acid combines to OH- ion of base to form 
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Answer:
1.Carbon is the chemical backbone of life on Earth. Carbon compounds regulate the Earth's temperature, make up the food that sustains us, and provide energy that fuels our global economy. Most of Earth's carbon is stored in rocks and sediments. The rest is located in the ocean, atmosphere, and in living organisms.1 Feb 2019
2.Carbon is found in the atmosphere mostly as carbon dioxide. Animal and plant respiration place carbon into the atmosphere. When you exhale, you are placing carbon dioxide into the atmosphere. ... Carbon is found in the hydrosphere dissolved in ocean water and lakes.
Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.
<span>The primordial germ cell in the embryo undergoes mitosis to produce a spermatogonial stem cell.
The spermatogonial stem cell undergoes mitosis. The new cells could either be stem cells or spermatogonium cells.
The spermatogonium undergoes mitosis to generate a primary spermatocyte.
*** Up until this point, all cells are diploid ****
The primary spermatocyte (diploid) undergoes MEIOSIS I to generate TWO haploid secondary spermatocytes.
Each secondary spermatocyte undergoes MEIOSIS II to generate a total of FOUR early spermatid.
The spermatid mature in the seminiferous tubule, and once they are completely mature they are released into the lumen.
Now called sperm cells, they pass into the epididymis, where they are stored until time to be released during ejaculation
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