Is the study experimental or observational? A sample of fish is taken from a lake and each fish is weighed to measure the effect of pollution from a nearby factory on the fish. This group is then compared to another group taken from a lake in the same county in a state park where no businesses or houses are near the lake.

For me I think it is observational

Step-by-step explanation:

Observation is the action or process of closing observing or monitoring something or someone while

Experimenting is to perform a scientific procedure, especially in a laboratory to determine something

So from the two definition I think the answer is observation

there would be 365 different 4 digit numbers

step-by-step explanation:

i belive that it is 365 because i asked google

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

hope it will

#faazmessi