2 Points
A biologist began studying a population of bullfrogs. In 1998, she found that
most of the male frogs croaked, but some did not. A bat species known to
prey on male frogs migrated to the area in 2005. The biologist returned to the
area in 2008 and repeated population counts of male frogs. The table shows
her data
1998
2002
2004
2008
Number of
noncroaking males
244
368
298
1086
Number of croaking 742
males
1165
791
305
What factor most likely caused the noncroaking male population to increase
after 2004?
O
A. Extinction of the croakers because of the new predator
O
B. Adaptation of the croakers in the presence of a new predator
O
c. Learning to avoid the new predator
O
D. Selective pressure in the form of a new predator
HELP HELP PLEASE!!

C.The bats response to the croaking behavior of male frogs led to selective pressure against the croaking trait in frogs. Did that help?

Explanation:

answer would be b, a tariffs main purpose is to protect domestic production and jobs.

which statement best describes why a government’s actions are important in macroeconomics? check all that apply.

1 government controls industry through policy.

2 government is both a consumer and a producer.

3 government can prevent changes and challenges.

4 government can use policy to influence the economy.

5 government can accurately predict economic trends.

1 , 2 & 4 for edgenu

according to this graph, how does supply behave in the long run?

a ]output remains constant.

b ]output increases.

c ]output cannot be predicted.

d ]output decreases.

the answer is a ]   for edgenu