In 2010, a new type of life form was found in California's Lake Mono. The microbe found has a variation in the structure of its DNA. DNA usually consists of nitrogen bases, sugars, and phosphates. However, this newly-discovered microbe uses arsenic if phosphorus is not available. This fact might lead to the discovery of

Which of the following is a difference between a food chain and a food web? selected: a. food webs contain both plants and animals. food chains only contain animals.this answer is incorrect. b. food webs show energy transfer. food chains show which animal eats which animal. c. food webs separate organisms by tropic level. food chains do not. d. food webs are a complex patterns of energy flow. food chains only show one line of energy flow.

15 ! come and answer! a(n) disease is caused by a pathogen and can spread among organisms. a infectious b noninfectious c toxic d contaminated

How does secondary succession differ from primary succession?