Answer: D. Ecosystem
Explanation: The ducks are interacting with trees and algae with are all part of an ecosystem.
DNA is a chain of nucleotides bonded together. On that chain there are particular portions of it that the sequence of the nucleotide codes for particular proteins; this is known as a gene. In eukaryotric cells, DNA is coiled around proteins such as histones to form chromatids which when two join at the centre by a centromere to form a chromosome.
The condition of being physically fit and active
Answer:
A country is considered tropical when it lies between the Tropic of Cancer and the Tropic of Capricorn.
Explanation:
The equator is located between the tropics
Answer:
it is a because i did this one
Explanation: