Answer:
Classification is a systematic ordering of the object of research, in this case, ecosystems at the earth's surface or, in other words: landscape units as 'holons'. As for general principles of classification, we can learn a lot from the best-known classification, the taxonomical classification of species.
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The estauries are characterized by mix of fresh water and salt water. That is option A
<h3>What is estauries?</h3>
Estauries is defined as the part of water where many rivers meet and sweep into the ocean.
The characteristics of estauries include the following;
- The salty water mixed with freshwater resulting to brackish water formation.
- The gradient of salinity in a semi-enclosed coastal system.
Learn more about brackish water here:
brainly.com/question/7385521
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Which feature is characteristics of estauries:
A mix of fresh water and salt water.
swap-like land.
region of land that drains into a body of water.
the gradient of salinity in a semi-enclosed coastal system.
 
        
             
        
        
        
Answer:
femur I am pretty sure. The skull sheilds your brain, your ribs for your heart and lungs. backbone spine
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Answer:
True
Explanation:
This is because sacromere is the basic unit of cardiac muscles which is made up of thin and thick filaments. Cardiac muscle is consist of the contractile cells of the heart which it's appearance is striated as a result of alternating thick and thin filaments which is composed of myosin and actin. Actin and myosin are both firm contractile protein filaments, the actin form the thin filaments, and myosin form thick filaments.
 
        
             
        
        
        
This is a rather subjective question and has a lot to do with the type of society in which one lives. the more secular the world is becoming... gives science a huge spotlight on the stage. because science provides an answer with tons of evidence to back it up, it is seen as a reliable method to follow. So, socially speaking you may have experienced in a normal conversation where someone turns around and tells you that your opinions are just opinions and have nothing factual to back them up. This is where science comes in. Economically and politically speaking, science is used to justify different political aims of governments. However, this is done mostly through the misrepresentation of science by people who are trying to pursue their own agenda. So really this question can be answered in many ways and from many different perspectives but do not forget that science influences all streams for the better but also for the worse in the way in which it is represented. 
Hope that helped