Answer:
d. Digital rectal examination and PSA testing have been proven ineffective.
Explanation:
The prostate is a small gland in the male reproductive system and is usually the shape and size of a walnut. Current methods to determine if a prostate has become cancerous include a physical exam (known as a digital rectal exam or DRE), magnetic resonance imaging, a biopsy, or tests to determine prostate-specific chemical antigen (PSA) levels in the blood.
Prostate cancer is considered a cancer of the elderly, since most cases are registered in men over 60 years. The most effective techniques for screening for this cancer are annual screening exams - which include the blood-drawn PSA test and digital rectal touch - are recommended for all men aged 50 and over.
The correct answer is C.
In the aquarium, the water plants would provide the O2 molecules necessary for the snail's metabolism and the snail would release the CO2 molecules that are a byproduct of his metabolism into the container. The CO2 would later be used by plants to make sugar in the process of photosynthesis, releasing more O2 and the cycle of two gases would be completed.
Answer:
Option B
Explanation:
Answer A is incorrect as the data is not analyzing how many fish each lake has, but rather the pelvic score of the fish. Answer C is incorrect as the graph shows that the fish in Frog Lake are complete, and that there are 0 fish that have reduced or absent pelvic scores, therefore the fish don't have varying pelvic structures. Answer D is incorrect because the data is not analyzing the size of the fish and again is only analyzing the pelvic score of the fish. This being said by process of elimination the answer would be option B, as the fish in Bear Paw Lack lack complete pelvic spines but rather have reduced or absent pelvic spines.
The correct answer is D. Precambrian Time - Paleozoic Era - Mesozoic Era - Cenozoic Era. This is the correct order of the geologic time scale, from oldest to most recent. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
