The oldest true fossils are trace fossils called Stromatolites found in Australia, and dated between 3.5 to 3.3 billion years old.
Raphael Baumgartner and their team have finally uncovered evidence of organic matter in the ancient rock formations known as stromatolites found at the Dresser Formation fossil site in the Pilbara region of Western Australia. They detail their findings in a new article published in the journal Geology.
With a variety of methods, including scanning electron microscopy, scanning transmission electron microscopy, energy dispersive X-ray spectroscopy, Raman spectroscopy, nano-scale secondary ion mass spectrometry, and stable carbon isotope analysis, the researchers examined the samples in thin slices.
According to the team's analyses, pyrite, a mineral with many tiny pores, makes up the majority of the stromatolites. Additionally, the pyrite contains nitrogen-bearing organic material and strands and filaments of organic material that closely resemble the remains of microbial biofilm colonies.
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Answer:
The correct answer is option a. "the cells will shrink due to water loss by the cell".
Explanation:
Cells placed in a hypertonic solution will shrink due to water loss by the cell. An hypertonic solution has a high content of solutes dissolved, which makes it a solution with high tonicity. Water tends to move from a solution of low tonicity to a solution with high tonicity. As a result, cells placed in a hypertonic solution will start to loss their inner water and shrink, which causes its death.
Because it's clearly the queen
Answer:
Explanation:
1. Blood Plasma: this is made up óf water, salts and protein. And it makes up more than half of the total volume of blood
2. Erythrocytes are also known as the red blood cells which makes up some of the solid part of the blood. They are packed with haemoglobin which helps to carry oxygen and they also gives blood the characteristics red color
3. These are also called white blood cells that function in producing antibodies that fights infection. Some types are monocytes, neutrophils, eosinophils etc.
4. Blood platelets: these also make up a part of the solid portion of the blood. They aid in blood clotting preventing blood loss.
