Answer:
The correct answer is photosphere.
Explanation:
Visible light comes from the layer known as the photosphere.
The Sun's photosphere is the layer that emits visible light. The Sun's atmosphere has seven layers: The core, or the Sun's interior. The radiative zone. The convective zone. The photosphere or the visible surface. The Chromosphere. And the corona, the outermost layer.
Ok, I'm not fully sure but answer B sound right, so I think it's right
<span>The bite of an infected ticks. The disease, caused by bacteria of the borrelia type, is transmitted to humans through the bite of infected ticks of the Ixodes genus. Two tick species the black legged tick and the western blacklegged tick are known to transmit the bacterium. Most humans are infected from the bites of immature ticks (nymphs) because adult with Borrelia burgdorferi bacterium are larger and more likely to be discovered.</span>
It is likely to be a negative feedback. D is formed from B or C. D reduces the activity of the enzyme that converts A.
