C. How the organism is related to others
Explanation:
From a single fossil, a scientist can learn how the organism is related to others. Fossils are the preserved remains of organisms that are usually found in rocks.
- Organisms must posses certain characteristics to ensure their preservation as fossils.
- Most organisms that are preserved usually have hard parts.
- Some climatic influence can also arrest decay and provide a platform organisms to be preserved wholly.
- Fossils are used for relative dating of events in nature.
- They can also be used to determine how an organism is related to another.
- This is called phylogeny. It is the study of evolution and how organisms relates to one another.
- Fossils are very good and useful phylogenetic tools.
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<span> Embryonic stem cell research is kind of a dead area now since there is no way to control the differentiation. Most research is being done on adult stem cells to help map and control the differentiation process.
Stem-cells from aborted fetuses - The government doesn't sponsor this, if it is done it is by private companies not located in the USA. You could try researching umbilical cord stem cells to be somewhere near your topic. They come from the afterbirth of normal deliveries.
You could do a much easier report by covering cloning of mice through stem-cell technology. It is happening and helping scientists understand diseases. </span>
Answer:
Funding for alternative energy search often changes with the cost of fossil fuels. It is also influenced by investments in stopping pollution and conserving natural resources. For example, an energy crisis in the 1970s led to more funding for oil alternatives.
Explanation:
Answer:
Kidneys : helps in forming urine
Ureter : They are connected to kidney and by peristaltic action transports urine from kidneys to bladder .
Urinary bladder : It is an hollow sac that holds the urine .
Urethra : transports urine from the bladder to outside of the body .
Explanation:
The human excretory system consists of : Kidney ,ureter ,urinary bladder and urethra .The figure is shown below .
Now , as far as functions are concerned we have :
Kidneys : They have excretory units called nephrons that further consist of :
- Bowman's capsule
- PCT (Proximal convoluted tubule )
- DCT (Distal convoluted tubule)
- CT (collecting tubule )
In nephrons urine is formed and via ureter it is transported to a hollow sac like structure called urinary bladder .
This bladder has muscles that cant remain contracted up to longer period )and then voluntary and involuntary it is excreted through urethra .
The process of passing urine is called Micturition .
