Prokaryotes are organisms made up of cells that lack a cell nucleus or any membrane-encased organelles. Eukaryotes are organisms made up of cells that possess a membrane-bound nucleus that holds genetic material as well as membrane-bound organelles.
They do not have external ears like us. but they do have ear holes located directly behind their eyes. frogs ear holes are covered with thin tympanic membranes or the eardrums that protect the inner ear cavity.
The two are blood and lymph
The correct answer is "false".
The urine comes from the kidneys and will pass through the renal pelvices where they will form the ureters. The urine in the ureters will eventually flow to the urinary bladder where it is stored. Eventually, in urination, the urine is expelled from the urethra.
Answer:
An ecosystem consists of all the organisms in an area, the community, and the abiotic factors that influence that community. Ecosystem ecologists often focus on flow of energy and recycling of nutrients. Biosphere: The biosphere is planet Earth, viewed as an ecological system.
