Every September 23, there is a * A. solstice
B. equinox
C. both of the above
D. neither of the above

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla