Answer:
I think the answer is C: An experiment that includes one group for which the scientist controls all variables
Explanation:
<span>When a system is behaving erratically, a graph of data measured from the system
</span><span>does not form a pattern.
</span>
Answer:
The correct answer is - dandelion weeds adapted many tricks to reduce all other competitors as it is invasive species.
Explanation:
The dandelion is a successful weed. It's got a lot of adaption to eliminate or dominate other plants and weeds, such as ethylene gas released by its rosette of leaves that prevent other plants from growing near dandelion.
Seeds of dandelion also adapted seed dispersion tactic by seed-parachutes into the wind. Dandelion weed does not require to be pollinated and rapidly increases their numbers. Dandelion has a taproot that goes deep into the soil, up to three feet down for water and nutrients.
First, we need to solve for the common ratio from the data given by using the equation.
a(n) = a(1) r^(n-1)
1024 = 4 r^(9-1)
256 = r^8
r = 256^(1/8)
r = 2
Then, we can find the sum by the expression:
S(n) = a(1) ( 1 - r^n) / 1-r
S(9) = 4 (1 - 2^9) / 1-2
S(9) = 2044
Therefore, the correct answer from the choices listed above is option B.
A. Dietary and functional fiber
