Answer:
Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating. It has a half-life of 4.5 billion years. It decays to produce lead-206.
Answer:fungi
Explanation:fungi are heterotrophic plants. They are organisms that lack chlorophyll,true roots,stems and leaves .as a result they cannot produce their own food .they depend on dead and decaying matter for their source of energy, thus they are saprophytes.Fungi may be Unicellular or multicellular. They consist of harlike filaments of hyphae which fuses together and forms a mass of mycellium. Common example of fungi we see around us are mushrooms. Fungi feed by secreting digestive enzymes into their substrate and they absorb the nutrients that are broken down by the enzymes. Fungi are important because they help to rid the environment of dead matter by decomposing them. Matured fungi reproduce asexually by the means of spores
Layers of fossils in pillars, the rock covering them is dated and we get an exact time of each layer.
Answer:
The main products of cellular respiration are CO2, H2O, and chemical energy/heat.
Explanation:
Here is the equation for cellular respiration:
C6H12O6 + 6O2 --> 6CO2 + 6H2O + heat
