Answer: The correct option is <span>a long carbon and hydrogen chain and a carboxyl group.
Reason: Fatty acid is basically consists of two main parts:
a hydrocarbon tail connected with carboxylic group as shown in the figure.</span>
The answer is A: phytoplankton provides nutrients to consumers in the ecosystem.
Hope this helps:)
After a caterpillar eats a leaf, it can convert the chemical energy into mechanical energy to help it build a cocoon.
Answer:
Example of natural active immunity is fighting off cold and artifical active immunity is building up a resistance to a disease due to immunization and allergic reaction is an response to antigen resulting from active immunity