If a tree dies and the trunk remains undisturbed for 13,750 years, what percentage of the original ¹⁴c is still present? (the half-life of ¹⁴c is 5730 years. ).

Afood web shows who eats who in any given habitat. every living thing, from one-celled algae to giant blue whales, needs food to survive. each food web is a possible pathway that energy and matter can follow through the habitat. a food web begins with producers: organisms that convert sunlight into usable chemical energy. the food web is completed by the decomposers who turn organic wastes, such as decaying plants, into inorganic materials, such as nutrient-rich soil. decomposers complete the cycle of life, returning nutrients to the soil or oceans for use by producers. in this food web, identify the decomposer.

Why are gold and platinum used for jewelry

Na podstawie bajki jana brzechwy mrówka napisz krótkie ,zabawne opowiadanie.najpierw u³u¿ plan-podziel wiersz na fragmêty mówi¹ce o zachowaniu ka¿dego ze zwierz¹t. nie nadu¿ywaj czasownik- a podzia³ zastosuj synonimy na przyk³ad odpowiedzia³ odpar³ odrzek³ mrukn¹³ w odpowiedzi us³ysza³ on na to w tok opowiadania wpleæ dialogi bohaterów bajki zadanie wykonaj w zeszycie