Answer:
1. A rock that contains evidence of past animal or plant life is called a <u>fossil</u>.
2. Prehistoric <u>Woolly Mammoth</u> have been discovered in permafrost in Alaska and Siberia.
3. Hardened tree sap can preserve animals in a substance called <u>amber</u>.
4. Fossils can be created by replacement using minerals such as <u>silica</u>, <u>calcite</u>, <u>pyrite</u>.
5. A <u>mold</u> shows the original shape of the plant or animal.
6. A cast represents a <u>solid</u> version of the original plant or animal.
7. Trails, tracks and burrows are examples of <u>trace</u> fossils.
8. Some of the oldest fossils on earth are from ancient <u>worms</u> crawling on the seafloor.
Explanation:
Fossils are known to be the remains of plants and animals which have been preserved and kept in rock. They are usually a shell, skeleton or plant fiber that has been buried. Over time, they turned into rock.
Fossil amber are known to be fossil insects that are preserved in hardened tree sap. These insects and some small animal or plant that are found in these hardened tree sap were trapped in the tree.
Woolly Mammoth is known to be a closest extant relative to the Asian elephant. The appearance and behaviour of woolly mammoth are among the best studied in Siberia and Alaska.
The question is incomplete as it does not have the option which are
- superposition
- paleomagnetism
- fluorine analysis
- geolayering
Answer:
Superposition
Explanation:
In calculating the relative age of the fossils, the paleontologists use the principle or law of superposition.
The law of superposition states that the rock has layers in which one layer is deposited over another layer. Each layer of these layers is older than the layer which is present at the top of this layer.
Therefore, this method can be used to determine the relative age of the fossils like in the given case, the species A found in the lower layer than the species B because the species B is present in the top layer.
Thus, the superposition is correct.
For example, enzymes are proteins that speed up chemical reactions in the body and hormones, like insulin, are proteins that regulate the activity of cells or organs. Some proteins transport materials throughout your body, such as hemoglobin, which is the oxygen-transporting protein found in your red blood cells
Answer:
i think iam not sure it is C
Answer:
All of the options are true for a MRSA infection.
Explanation:
<em>Staphylococcus aureus</em> is one of the most frequent pathogens causing hospital and community infections. <em>S. aureus</em> can become very easy methicillin resistant (called MRSA isolates) and others beta-lactam antibiotics (are the ones widely used to treat infections) and usually can be resistant to other class of antibiotics, become a very strong bacteria making treatment options very limited. MRSA isolates can rapidly transfer the methicillin resistance to other species of S<em>taphylococcus</em> and some other bacteria. Also <em>S. aureus</em> can acquire other antibiotic resistant genes making a deadly bacterium for its strong resistance. It is in search how the bacterium acquire this antibiotics resistance ( and other virulence factors genes) and the mechanism involve to develop new drugs to treat MRSA infections with the hope that can´t develop resistance to this new drugs.
