Which of the following biology statements are true?

[SiewM]

1) Biological control is less effective than pesticides.2) The main source of energy in a food web are the plants.3) Biological control does not affect the populations of other animals.PLEASE help.thank you!

[JohnA9859]

2 AND 3

[ultikhopri]

2

[lifeisloony]

2 and 3Explanation:1. It is not true that biological control is less effective than pesticides. In the long run, it is much more effective and much less harmful as it does not lead to insectes and pests becoming more resistant.2. Plants are the primary Producers and provide energy for all the trophic levels above them.3. Biological Control is very specific and thus does not (most of the time) affect other populations.

[HamidAk]

The true statment is2)The main source of energy in a food web are the plant.

[Andyo]

None are true.1. Comparing biological control versus pesticides is a case by case scenario. I am sure you could find case studies where a set of conditions led to either being more successful. It also depends on what you consider successful, and in what time scale. Crop yield or price, and long term or short.2. The source of energy is most food webs is the sun. But not all, some rare food webs have geothermic sources, and no plant life.3. Biological controls will always be an influence on the environ. This range from absolutely tiny, to large scale, again its a case by case scenario. But there will be an affect.