Which of the following is used as evidence in supporting the idea that life changes over time?
a. the time period in which an embryo develops
b. the similarities in the body systems such as the nervous and circulatory systems
c. the existence of homologous structure
d. the big bang theory

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last

How do living things obtain phosphorus

Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.