Which of the following equations accurately expresses the relationship between weight, mass, and gravity?
A.
B.
C.
D.
gravityAnswer: B
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Indian pipe, a flowering plant, lacks chlorophyll and is not able to do photosynthesis. It obtains food as:
A. a mutualistic organism B. a host C. a commensal organism D. a parasite E. More than one of these choices is correct.
If you are going to study where immigrants are likely to live when arriving to Paris, what model would you likely use?
A) Sectors model B) Concentric zones model C) Multiple nuclei model D) Residences model E) Relocation model
Researchers wanted to determine whether pesticide Z is effective at killing grasshoppers that typically invade cornfields. Two 10-acre cornfields located 1 mile apart were chosen. The cornfield to the west was sprayed only with water
The cornfield on the east received the same amount of water with a 10% solution of pesticide Z. The number of grasshoppers in the fields was recorded every week for 10 weeks. The number of grasshoppers in the west field treated only with water doubled after 10 weeks. The number of grasshoppers in the east field treated with pesticide Z declined by 50% after 10 weeks. Discuss two problems with the design of this experiment, and propose solutions to these problems.
The nebular hypothesis proposes that our solar system was born about 1 billion years ago.
Answer the following statement true (T) or false (F)