Answer:
Increased oxygen concentration
Explanation:
The evolution of O2-producing cyanobacteria that use water as terminal reductant transformed Earth's atmosphere to one suitable for the evolution of aerobic metabolism and complex life. The innovation of water oxidation freed photosynthesis to invade new environments and visibly changed the face of the Earth.
Answer:
B
Explanation:
The beak depth of the finch population decreased.
- keystone species is the correct answer.
<u>keystone species</u> which keeps the number of other animal population in
control and low in the entire ecosystem. They play an important role
through this process and helps the food chain effectively.
dominant species - most common species; found often in the ecosystem.
invasive species - which fights for itself survival and can cause harm to
ecosystem. non-native to an ecosystem
he patient's blood would flow more sluggishly from the arteriole into the capillary bed. Thus, the patient's capillary hydrostatic pressure would be below the normal 35 mm Hg at the arterial end. At the same time, the patient's blood colloidal osmotic pressure is normal—about 25 mm Hg.
Answer:
Polaris could be a name for any North Star. ... All of these stars are moving through space, but they're so far away we can't easily see them move relative to each other. That's why the stars appear fixed relative to each other. And it's why, for the most part, we see the same constellations as our ancestors