According to the endosymbiosis theory, scientists believe that early eukaryotes formed from prokaryotes. Why do scientists believe that prokaryotes existed earlier than eukaryotes?
A.
All prokaryotes are aquatic in nature.
B.
All prokaryotes perform photosynthesis.
C.
Prokaryotes have organelles, while eukaryotes do not.
D.
Certain eukaryote cell structures resemble prokaryotes.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

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

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes