How are living organisms linked within an ecosystem? A. by their physical adaptations B. by what they eat C. by their size D. by their habitat ILL GIVE BRAINLIST​

B

Explanation:

Living Organisms in an ecosystem have a food chain or energy chain. This chain links all organisms within an ecosystem, therefore, answer B "By what they eat" should be the correct answer

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.