Answer:
c. a potential decrease in the species of fish
Explanation:
Dams block the migration of fish, deplete oxygen from rivers, and interfere with the biological triggers that guide fish. They also reduce self-cleaning ability of rivers. Due to the construction of dams and other factors, the population of freshwater fish species declined 37% between 1970-2008 - more than the populations of all other ecosystems. Populations of tropical freshwater fish species declined by as much as 70%.
Answer:
The response of the interviewer to each candidate
Explanation:
The interviewer is the dependent variable in Gina experiment on discrimination based on looks in hiring. Gina key aspect of her experiment is to give the dependent variable level of Independence in operating.
The outcome of Gina's study will be determine on whether the interviewer will employ the candidate with extremely attractiveness even when he knew both candidate posses equivalent qualifications or not
Answer:
Hydrophobic Substance.
Explanation:
On drinking the coffee with no cream or sugar a thin layer floating on top of the coffee.This substance that float atop of the coffee is called the hydrophobic substance.
Hydrophobic substances are those substances that are water repellent.They are mostly oils,fats,alkenes. Dry Coffee contains some oils hence this layer appeared on the top of the coffee.
Link is in the comments it’s a legit national geographic website that will help u
<u>Full question:</u>
Limestone turns into marble when there is a great amount of heat and pressure. Identify the change within the rock cycle which takes places when limestone changes into marble.
A. metamorphic rock to sedimentary rock
B. sedimentary rock to metamorphic rock
C. igneous rock to metamorphic rock.
D. sedimentary rock to igneous rock.
<u>Answer:</u>
Option B
the change within the rock cycle which takes places when limestone changes into marble is sedimentary rock to metamorphic rock
<u>Explanation:</u>
When the limestone is feigned by heat and huge pressure while a method identified as metamorphism. A variation in the composition of a rock due to natural auspices is that method. The limestone plan to build crystal afresh by setting the overlapping crystals that construct up the marble during that method.
A sedimentary rock, gets concealed underground on the planet for several ages, the heat and pressure can change can happen to form marble. Marble is tough and can be smoothed to a fine radiance. It is extensively utilized for constructions and sculptures. It befalls in multiple distinct shades.