I am going to assume you meant the "first trophic level" of the ecosystem. The first tropic level of an ecosystem is made up of producers, so the answer is C, Acorns.
Answer:
Bears eat plants, insects, fish, and animals.
Explanation:
The appropriate response is that the zones are just situated in provincial territories. Low Emissions Zones is a movement contamination accuse plan of the point of lessening the tailpipe discharges of diesel-fueled business vehicles in London. Just vehicles that don't fit in with higher discharge models are charged, the others may enter the controlled zone for nothing out of pocket.
Answer:
If a person has extra chromosome you or they might have down syndrome
Explanation:
Normally a baby inherits 23 chromosome from each parent which is equal to 46 total and basically those who survive develop down syndrome
Answer:
Mutation
Explanation:
A mutation is a change in the sequence of genetic letters, called bases, within a molecule of DNA.
