Scientists examine the light spectra from distant stars to determine if the size of the universe is changing. Why do astronomers believe the size of the universe is changing?

Question 12 options:

The red shift indicates that distant galaxies are moving away from each other.

The red shift indicates that distant galaxies are moving towards each other

The blue shift indicates that distant galaxies are moving away from each other

The blue shift indicates that distant galaxies are moving towards each other

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).