They can measure altitude and properties of the cloud for better predictions of the weather.
        
             
        
        
        
Spores and seeds have basically the same function-dispersal-but are vastly different because spores (D) are unicellular; seeds are not.
<h3>What are  unicellular organism?</h3>
A unicellular organism can be regarded as  single-celled organism, which are those organisms  that consists of a single cell.
This is different from   multicellular organism  because it consists of multiple cells however  Organisms  can be selected base on  general categories which are  prokaryotic organisms and eukaryotic organisms.
It should be noted that Spores and seeds have basically the same function-dispersal-but are vastly different because spores (D) are unicellular; seeds are not.
Therefore option D is correct.
Read more about Spores here:
brainly.com/question/3529377
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Answer:
<em>Farmers are the ones who grow crops. These plants are eaten by animals and humans. The humans then feed on animals and so on. </em>
Explanation:
The chain of feeding occurs from one trophic level to another. The organism of higher trophic level feed on organism of lower trophic level. This process is called as food chain. 
In the process of food chain, the flow of energy occurs. Nonetheless, just 10% of the consumed energy streams starting with one trophic level then onto the next as some of it is utilized for metabolic exercises.
 
        
             
        
        
        
The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
        
             
        
        
        
<u>Answer:</u>
Approximately, the oldest stromatolites are 3.6 billion years old on earth.
<u>Explanation:</u>
- Stromatolites is not only oldest earths fossil but conspiracy in that they are singular visual portal in deep time on earth. 
- It is defined as laminated accumulation structure that is they stick up above sea floor . 
- Stromatolite buildings includes oldest fossils which are 3.5 billions old when the earth were too unfriendly to support life.
- The study of  fossil age, evolutionary, method of formation are known as paleontology. 
- These specimens are considered as old fossils which are around 3.4 to 4.1 billions years old.