Answer:The excretory system is a close partner with both the circulatory and endocrine system. The circulatory system connection is obvious. Blood that circulates through the body passes through one of the two kidneys. Urea, uric acid, and water are removed from the blood and most of the water is put back into the system.
Explanation:
When someone is HIV positive it is their immune system is deficient this can lead to AIDS or other serious infections
Answer:
Option-C
Explanation:
Scientists found a fossil of a fish with four limbs or legs. The fossil was estimated to be around 375 million years old.
The fossil showed the fins and scales of a fish but they also possess the bones of proto-wrist, shoulders and the elbow.
The presence of these bones can be a clue that the fish evolved the limbs to walk on the land and will later evolve into animals belonging to amphibians, reptiles and mammals. Therefore, the Tiktaalik is considered the missing link of how life evolved from water to land.
Thus, Option-C is correct.
Translation is the process by which a protein is synthesized from the information contained in a molecule of messenger RNA (mRNA). ... Translation occurs in a structure called the ribosome, which is a factory for the synthesis of proteins. -google
The gravitational force between two rolling balls depends on their masses and which other factor?
Answer: C) Their separation "100% sure
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