The answer is A. Excretion I hope this helps
Answer:
When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. It can breed and spread quickly, taking over an area. Invasive species can change the food web in an ecosystem by destroying or replacing native food sources.
Explanation:
I majored in Biology
Teens diagnosed with schizophrenia experiences LOSS OF GRAY MATTER THAT SPREAD IN WAVES INTO THE EARLY 20S.
Schizophrenia is a group of disorders that is characterized by delusions, hallucinations, cognitive impairment, mood disturbance and social withdrawal. Researchers had noticed that there is a distinct process in the manner in which brain development occurs in normal teens and teens with schizophrenia.<span />
The answer is A. i had this question yesterday