You literally just copy and pasted the question from your course and didnt attach the image<span />
The answer to this question would be: prostate glands
The term upper end is a bit ambiguous and it should be better to call it the proximal end of the urethra. The upper ends of the urethra, near the bladder, there is an organ called prostate. The prostate is a gland that only found in males as its function was to produce seminal fluid, make it a bit alkali.
Answer :There was enough oxygen in the atmosphere to support a major burst of life on Earth
Explanation:
The Great Oxygen Event marks the time, approximately 2.5 billion years ago, when there was enough oxygen in the atmosphere to support a major burst of life on Earth
For the first half of the Earht's history, there was no oxygen in the atmosphere. It was inhabited only by single-celled organisms.Of those simple life forms, the cyanobacteria may have. evolved a way to take energy from sunlight, and used it to make sugars out of water and carbon dioxide. They used the same chemical process we know as photosynthesis. This released vast quantities of oxygen into the atmosphere and triggered the evolution of complex life.
The appropriate response is cilia. Cilia are little hair-like structures on the surface of the cell. The hairs clear hair, bodily fluid, caught tidy and microscopic organisms up to the back of the throat where it can be gulped.
Cilia are found in the coating of the trachea (windpipe), where they clear bodily fluid and earth out of the lungs. In female well evolved creatures, the beating of cilia in the Fallopian tubes moves the ovum from the ovary to the uterus.
<span>A joint united by dense fibrocartilaginous tissue that usually permits a slight degree of movement is a symphysis.</span>
