Answer:
sophisticated irrigation, chemical fertilizers, chemical pesticides
Explanation:
The use of irrigation to provide needed water and the use of natural fertilizers to promote crop growth are farming methods that have been practiced for centuries. More sophisticated irrigation techniques, various chemical pesticides, and modern chemical fertilizers have been developed in the twentieth century.
Answer:
C. empirical evidence
Explanation:
Empirical evidence is a type of knowledge obtained through sensory experience, that is, through the process of observation and experimentation. Empirical evidence is often used during the application of the scientific method to test a hypothesis. In the example in question, Peter Grant obtained empirical evidence about birds' biology to verify that his assumptions about their evolution were correct.
Answer:
Explanation:
“Higher levels of carbon dioxide in the atmosphere will have no effect” is not a current theory regarding global climate change.
Global warming refers to the recent and ongoing rise in global average temperature near Earth's surface. It is caused mostly by increasing concentrations of greenhouse gases in the atmosphere. Global warming is causing climate patterns to change
The correct answer between all the choices given is the third choice or letter C. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.
Could you give more information? For the most part, the dependent variable is what you’re recording. For example, if you wanted to see how plants would grow in different conditions, plant height would be the dependent variable. The height DEPENDS on the condition it was grown in. Hope this helps!
