Once the organism dies the amount of carbon-14 decreases exponentially.
The exponential, radioactive decay of carbon 14 is used to estimate the death dates of organic material.
Living organisms have approximately the same ratio of C12 to C14 in their tissues. Once the organism dies C14 decays into nitrogen 14. Decay of C14 to nitrogen 14 changes the ratio of C12 to C14. The ratio of C12 to C14 in dead material can be compared to the ratio when the organism was alive to estimate the date of its death. Radiocarbon dating can be used on different samples such as bone, cloth, wood and plant fibers.
Euglena is green in color because of the chlorophyll that is contained in the chloroplast of that organism and the body structure that is located at its base is known as flagellum
.
Explanation:
Euglena are species that are found in the fresh and salt water. They are abundantly found in inland waters where they manage themselves to bloom in large amount and color the water surface of ditches and ponds green.
This green color which them form are mainly due to the chlorophyll that is contained in the chloroplast of the organism. chlorophyll is known to be the pigment that is responsible for the green color.It is the cause for the green color in this case too.
Euglena contains a specialized body structure which is located at the base of the tail by which it manages to move.
This specialized structure is known as Flagellum.
<span>Step 1: Evaporation. The water cycle starts with evaporation. ...Step 2: Condensation. NASA: The Water Cycle [720p] ...Step 3: Sublimation. ...Step 4: Precipitation. ...Step 5: Transpiration. ...<span>Step 6: Runoff. ...</span></span>
Answer: Scientific observation
Explanation:
The reason for this is, Ben is observing the plants, coming up with questions.
Answer:
C: competitive exclusion
Explanation:
<em>The competitive exclusion principle states that organisms living in the same community while competing for the same resources cannot coexist at a constant population rate. </em>
Once some of the species within the community get a slight competitive edge over other species, they become dominant and this might lead to the extinction of the weaker species in the long run.
<u>In the experimental plot, the removal of sea stars provided mussel and barnacle with a competitive advantage over other species within the community (sea stars are predators of mussels and barnacles). This led to the dominance of mussel and barnacle and the eventual extinction of other species within the experimental plot as compared to the control plot.</u>
The correct answer is C.
