Well, there's producers and consumers. There is also one provider that is the main source of energy for all living things which is the sun. The sun provides sunlight for the producers to make their own food through photosynthesis then consumers come and eat the producers(plants) and that gives them energy. And then predators come and eat that animal and that provides their energy.
Two types of crust, the <span>thin oceanic crust that underlies the ocean basins, and the</span> continental crust that underlies the continents, which is thicker than the thin oceanic crust.
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Explanation:
Natural selection is the mechanism that is responsible for the evolution of organisms.
In the given case, the Freshwater shrimp has been introduced to a pond in which the two species with variations are introduced.
The <em>C. cantonensis </em>is brighter in color whereas the <em>C. multidentata</em> is mottled drab in color. The predator fish can feed easily on the species which is brighter therefore <em>C. cantonensis</em> is more susceptible. The mottled drab species is not easily predated by the species.
The 30 % offsprings of <em>C. cantonensis</em> can survive till the reproductive age whereas 75% of C. multidentata. This shows that natural selection has acted on the color of the shrimp species selected against the predator fish species.
The species with mottled drab color is the result of the differential reproductive rate.
The three different skeletal designs that give a body its shape are:
Hydrostatic skeleton-contraction of muscles occur for changing cooler, due to which movement is caused.
Exoskeleton-external skeleton composed of calcium carbonate and chitin
Endoskeleton-body's internal system made of hard mineralised components.
Answer:
d. there is a relationship between smoking and lung cancer
Explanation:
a) it is NOT true becasue although the research show that is more likely to get lung cancer for smokers, it DOES NOT show that all smokers get cancer.
b) it is NOT true becasue altough it is very possible that smoking contributes to lung cancer, the research DOES NOT prove that smoking is the cause of lung cancer, it only indicates a relationship between smoking and lung cancer that is evidence that smoking contributes to lung cancer but it is not irrefutable proof.
c) it is NOT true becasue the research finds a relationship between lung cancer and smoking, but it is not focused in explaining smoking predispositionon. It does not investigate predispositions in people to smoke.
