Why are control groups included in experiments?

What moon phase occurs 3-4 days after a waning gibbous?

How does mosquito control decrease infectious diseases? A) Mosquitoes carry pathogens and transfer them to humans. B) Mosquitoes are covered in many pathogenic bacteria species. C) Mosquitoes breed in standing water that contains pathogens.

Describe the two main jobs of the skeletal system

Select all that apply. Which of the following are reasons why vitaimins are essential to good health? (A) without vitamins the body could not grow (B) without vitamins the body could not repair damaged tissue (C) without vitamins the body could not

How many braincells do I have?

Which atoms are found in all carbohydrates?

Which group of animals has existed the longest? a. tubulidentates b. perissodactyls c. artiodactyls d. sirenians

In which organelle does the chemical process of photosynthesis occur? mitochondria nucleus chloroplast endoplasmic reticulum

What do birds have that distinguishes them from other organisms? a. Four-chambered he21 c. Amniotic eggs b. Wings d. Feathers

Which of the following is a convection from chemical energy and thermal energy A. coal is burned to heat water B. All of the options are correct C. charcoal is burned in a barbecue pit D. food is digested and used to regulate body temperatures