1.which geologic principle is the reason rock layers typically form parallel to each other? (2 points)

cross-cutting relationships

original horizontality

superposition

unconformities

2.examine the following diagram. place the labeled layers in order from youngest to oldest. (2 points)

3.diagram showing a section of rock strata. the bottommost layer is labeled 'a'; the layer directly on top of layer a is labeled 'b'; the layer directly on top of layer b is labeled 'd'; a narrow section of rock, labeled 'c,' extends from a through b and d and culminates in a volcano.

a, b, c, d

c, d, b, a

d, a, b, c

c, b, a, d

which of the following is a technique used in relative dating? (2 points)

beta decay

index fossil correlation

isotope ratios

radiocarbon dating

4.after three half-lives, a sample contains 10 grams of parent isotopes. how many grams of the parent isotope were present to start? (2 points)

320

160

80

40

5.insects often get stuck in the sap of ancient trees. the sap along with the insect inside harden forming a fossil. what kind of fossil is this? (2 points)

an image showing a fossilized insect preserved in hardened amber.

public domain

cast

crystallization

mold

trace

6.which of the labeled fossils comes from the oldest organism? (2 points)

a

b

c

d
10.
7.a sample of rock is found to contain 200 grams of a parent isotope. how many grams of the parent isotope will remain after one half-life? (2 points)

100

75

50

25

8.explain how a paleontologist might use absolute dating techniques to determine the age of a fossil. (5 points)

9.you are digging a hole in your backyard when you see a piece of fossilized bone in the dirt. how could you prove the age of the fossil? design a procedure for determining the relative and absolute age of the bone. (5 points)

the peaceful equids (horses, donkeys and zebras) were enslaved by the human race to do our bidding -- sorry, domesticated -- several thousand years ago, and since that time they've been an invaluable resource for transportation, agriculture, warfare, companionship and sometimes-horrifying entertainment.

this happened on tam airlines.

a 50-something year old white woman arrived at her seat and saw that the passenger next to her was a black man.

visibly furious, she called the air hostess.”what’s the problem, ma? ” the hostess asked her

“can’t you see? ” the lady said – “i was given a seat next to a black man. i can’t seat here next to him. you have to change my seat”

– “, calm down, ma” – said the hostess

“unfortunately, all the seats are occupied, but i’m still going to check if we have any.”

the hostess left and returned some minutes later.

“madam, as i told you, there isn’t any empty seat in this class- economy class.

but i spoke to the captain and he confirmed that there isn’t any empty seats in the economy class. we only have seats in the first class.”

and before the woman said anything, the hostess continued

“look, it is unusual for our company to allow a passenger from the economy class change to the first class.

however, given the circumstances, the commandant thinks that it would be a scandal to make a passenger travel sat next to an unpleasant person.”

and turning to the black man, the hostess said:

“which means, sir, if you would be so nice to pack your handbag, we have reserved you a seat in the first class…”

and all the passengers nearby, who were shocked to see the scene started applauding, some standing on their feet.”

explanation:

recognizing subtle discrimination means understanding unconscious bias. many times, unconscious bias motivates subtle discrimination against coworkers, bosses, and clients, which in turn can become illegal negative employment action. sometimes, people are unaware of the fact that they are discriminating.