Compounds like the pesticide DDT may bring about the evolution of new strains of organisms by...? (1) destroying food producers
(2) acting as natural selecting agent
(3) mixing two different sets of genes
(4) creating new ecological niches

(2) acting as natural selecting agent

Explanation:

Compounds like the pesticide DDT may bring about the evolution of new strains of organisms by acting as a natural selecting agent.

Evolution is generally defined as a gradual change to the characteristics of organisms over a period of time.

When DDT is used on a particular population of pest, those that are weak within the population die off, leaving only those that are strong within the population to survive and multiply. The DDT acts a selecting agent for the survival gene in the pest and the survived gene eventually evolve into a new, DDT-resistant strain pest in no time.

The correct option is option (2).

the correct answer is: d. the saltine and pretzel are made of flour, yeast, and baking soda, and salt. the pecan contains no flour but it does contain fats. the pecan is a nut that can be consumed as a healthy snack. first of all, pecans are a source of fat (monounsaturated fat), but they provide less fat than some other nuts. pecans are a rich source of dietary fiber, manganese magnesium, phosphorus, thiamin, vitamin e…

1. dermis

2. chemical

3. urine

4. viruses

5. antibodies