Answer:
1. Participants are randomly assigned to intervention or control
Explanation:
Quasi-experimental study -
It is the study to estimate the impact of an intervention on the target population with any random assignment .
This Quasi-experimental research shares , the similarities with the randomized controlled trial or the traditional experimental design .
But in this study , there is random assignment for the control or treatment .
Hence , from the options given in the question , the correct is ( 1 ) .
Answer:
Technology helped the field of geography to expand far outside of mapmaking.
Answer:
1.283 seconds
Explanation:
Given,
Distance between the earth and the moon = 3.85 × 10^8 meters (m)
Speed of the radio waves in space = 3 × 10^8 meters/second (m/sec)
As we know that,
Speed =
Time =
Time =
Therefore, Time = 1.283 seconds.
Thus, the time it took for the voice of Neil Arm Strong to reach the earth via radio waves is 1.283 seconds.
Answer: a. It will kill off edible sea life completely by 2048.
Explanation:
Oil spill is the contamination of marine bodies by petroleum products such as gasoline and diesel. Oil spills cast a film on the surface of water preventing oxygen from penetrating the surface.
For many sea life, these substance are toxic and even a small quantity can be deadly especially to small/juvenile fishes, plants, and shellfishes which live in shallow water. While oil spills usually occur in deep water, when it happens in shallow waters, the slightest exposure to shellfish is enough to kill them
.
Answer:
I think b)
Explanation:
Great Zimbabwe, extensive stone ruins of an African Iron Age city. It lies in southeastern Zimbabwe, about 19 miles (30 km) southeast of Masvingo (formerly Fort Victoria).