A. similar animals fossils found in South America and Africa 
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Sources during exercise based on the type of exercise performed, and therefore in most occasions the body will overlap between aerobic and anaerobic energy pathways. ... Conversely, lower levels of lactic acid means that the aerobic pathway predominated.
        
             
        
        
        
Answer:
Underground stem, Aerial stem, and subaerial stem.
Explanation:
Plant stems can be Underground stem, Aerial stem, and subaerial stem due to its presence and strength of the stem. Underground stem are thick stems that run below the ground surface. e.g rhizome. Aerial stems are thin stems that can not stand erect. Examples include watermelon and strawberry etc. Subaerial stems are very thin stems that do not rise up but grow just above the ground. for example, water plantain, flowering rush etc.
 
        
             
        
        
        
Explanation:
The chemicals are contaminant in the ground water system and they can inflict serious health hazards on humans when water is sourced from such polluted ground water system. 
- Consuming contaminated water can lead to cholera and diarrhea. 
- It makes ground water toxic and poisonous. 
- Drinking contaminated ground water can lead to the introduction of heavy metals in the body. 
- Chemical wastes containing radioactive materials can damage body tissues. 
- They render ground water unsafe for drinking ans usage. 
Learn more: 
Air pollution brainly.com/question/10743354
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Answer:
c. the formation of bone from within fibrous membranes
Explanation:
On the basis of formation ossification process is divided into two types: 
1) Endochondral ossification : The process by which bone is formed from haline cartilage.
2) Intramembranous ossification : The process by which bone is formed by replacing a fibrous membrane and not from cartilage. This type of ossification occurs as follows : 
- An ossification center appears in the fibrous connective tissue membrane.
- Bone matrix is secreted within fibrous membrane
- Woven bone and periosteum forms.
- Bone collar of compact bone forms and red marrow appears.
Hence option c. the formation of bone from within fibrous membranes is the right option