A plant called duckweed might be a viable option to remove phosphorus, nitrates, and heavy metals from rivers and lakes.
Answer:
D.
Explanation:
In general, a scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory.
Biochemical- apart of the second defense system
I believe it's oxygenated or oxygen rich blood away from the heart.
Answer:
2,855 is the size of the colony of mosquitoes after 4 days.
Explanation:
The law of uninhibited growth is given as:

= Original amount
A = Amount after time t
k = Positive constant repressing the rate of growth
We are given with:
Original population of mosquitoes = 1000
Population of mosquitoes after 1 day =1300
t = 1 day


Population size of mosquitoes after 4 days

A =? , t = 4 days

A =2,855.36 ≈ 2,855 mosquitoes
2,855 is the size of the colony of mosquitoes after 4 days.