"The earliest evidence of life on Earth comes from fossils discovered in Western Australia that date back to about 3.5 billion years ago. These fossils are of structures known as stromatolites, which are, in many cases, formed by the growth of layer upon layer of single-celled microbes, such as cyanobacteria. (Stromatolites are also made by present-day microbes, not just prehistoric ones.)
The earliest fossils of microbes themselves, rather than just their by-products, preserve the remains of what scientists think are sulfur-metabolizing bacteria. The fossils also come from Australia and date to about 3.4 billion years ago
Bacteria are relatively complex, suggesting that life probably began a good deal earlier than 3.5 billion years ago. However, the lack of earlier fossil evidence makes pinpointing the time of life’s origin difficult (if not impossible)."
(credit: https://www.khanacademy.org/science/biology/history-of-life-on-earth/history-life-on-earth/a/hypotheses-about-the-origins-of-life)
<u>and for the love of god please change that profile picture</u>
1: a) Cytokinesis
2: b) Prophase: Fibers form the mitotic spindle
3: It is the system that scientists use to name living organisms. It is beneficial to use this naming system because it is very precise and narrows it down to one specific organism. Another reason is because the roots used to make up one of the names can be compared to others, so you can see the relationship between two different organisms.
4: a) <span>Organisms once thought to be unrelated may be found to be related.
5: b) eliminating waste through the cell membrane.
I hope this helps you out.
</span>
This is the chemical formula for photosynthesis. Instead of just saying "Energy," however, it should specify solar energy, or light energy. Photosynthesis is the process of capturing solar energy and converting it to chemical energy.
Answer:
lood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: transporting oxygen and nutrients to the lungs and tissues.
Explanation:
Which is the best way to tell your partner that you are not ready to be sexually intimate?<span>Say that you are worried about what your friends will think of you.
Say that you are not ready and hope that he or she will respect that.
<span>Say that if he or she pressures you too much, you will break off the relationship.
the answer is B
</span></span>
