Answer:
B
Explanation:
Self-esteem is how we precieve ourselves, and varies from person to person.
Answer: The frequency at which new species emerge and are lost over evolutionary time is established by the rates of speciation and extinction.
Explanation:
The statement is probably false knowing that there is a notion of " atrophy" that probably originates from " trophy- trophic" and that if we consider a trophic chain abolished then the biocenoses just adapts before disapearing. If the adaptive process is not compatible to the remaining coordinates then some species would probably have to be protected
Answer:
provides protection to the valves and heart chambers.
Explanation:
