Answer:
The species that research has identified a species from the west coast of the United States which may have been the ancestor of 28 distinct species on the Hawaiian Islands.
Is:
The Muir tarweed
Explanation:
Research found that the Muir tarweed, a plant species from the west coast of the united states developed into 28 different species in a process that took it thousands of years. The reason behind this is that different mutations made them change slightly and differentiate themselves from the rest, however, the fertility and their reproduction made them evolve in so many kinds.
C. Carbon. Anything that contains Carbon is considered to be organic.
Answer:
B) the river itself is the digestive system, the water flowing is the muscular system pushing the canoe (food) towards the end of the river (anus).
Explanation:
Answer:
Hello!
Here's the correct order of events:
- Development of photosynthesis
- Free oxygen in the atmosphere
- Development of eukaryotic cells
- Sexual reproduction
Explanation:
Development of Photosynthesis:
3.5 billion years ago, the first photosynthetic bacteria emerged. They used near infrared light to form sulfates or sulfur compounds instead of oxygen.
Free oxygen in the Atmosphere:
Later, about 2.7 billion years ago, cyanobacteria or blue-green algae began to perform oxygenic photosynthesis by utilizing visible light.
Development of Eukaryotic Cells:
The first eukaryotic cell probably appeared around 2 billion years ago. The evolution of eukaryotes is explained by the endosymbiont theory. The endosymbiotic theory explains that eukaryotic cells formed when an ameoba like organism engulfed cyanobacteria and a microorganism capable of cellular respiration that later evolved into chloroplasts and mitochondria respectively.
Sexual reproduction:
The origins of sexual reproduction are still widely debated upon; some studies claim the event occurred 1.2-2 billion years ago.
Answer:
physically more vulnerable to extreme heat
Explanation: