Add spaces: TungstenHeavyAlloys(WHAs)arethebestchoicewhendesignersinaerospaceanddefenseindustriesrequireamaterialwhichcombineshighdensity,goodmechanicalstrengthandwhichiseasilymachined.

Answer: Tungsten Heavy Alloys (WHAs) are the best choice when designers in aerospace and defense industries require a material which combines high density, good mechanical strength and which is easily machined.

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Answer: Room Old Man Cactus Cephalocereus (desert cactus) photo, cultivation and maintenance, planting and watering, characteristics and description, seeds

Add spaces: Someagreedtoplay"heavy"rolestoprovideconditionsthatwouldenablethemajorityofpeopletocompletechosenexperiencingandwindupthirddensitykarma.

Answer:
Some agreed to play "heavy" roles to provide conditions that would enable the majority of people to complete chosen experiencing and wind up third density karma.