Answer:
500-million-year-old fossil found in BC is ancient ancestor of spiders and scorpions. Palaeontologists in British Columbia have found a fossil of the oldest known ancestor of scorpions and spiders.
The human respratory system is responsible for removing 2 carbon dioxide from blood
Answer:
C) Network of interconnected membranes.
Answer:
Supports a larger number of plant species and, therefore, a greater variety of crops. Protect freshwater resources. Promote soils formation and protection. Provide for nutrient storage and recycling.
Explanation:
Answer:
<h2>I think it's letter B</h2>
because if you treat the first affected person then you can ensure that the disease is not around and the community got rid of it.
