Which observation proves that a cellis a eukaryote?

A. It has a cell membrane

B. It contains ribosomes.

C. It has DNA inside a nucleus.

D. It contains DNA

A field is abandoned, and an invasive plant that can live in nutrient-poor soil moves into the field. If the land is later cleared of this invasive species and it is discovered that the soil has an abundance of nitrogen compounds, what conclusion

Oxygen weathers rock through a process called

The age of the universe is measured in 10 to 20

Which local winds occur at night? Select all that apply A. sea breeze B. land breeze C. valley breeze D. mountain breeze

If a plant has a genotype of Aa, we would assume which is true? 1. The a allele is the wild‑type allele for this plant species. 2. The plant has round seeds. 3. This plant had to have one parent of AA genotype and one parent of aa genotype. 4.

What is the cause of Angelman Syndrome? a) A mutation that occurs randomly after birth or due to a viral infection in the mother during pregnancy. b) The shutting off of the paternal chromosome and the deletion on Chromosome 15 from the mother.

Which of these is a relationship shown in Carla's food web? about surface water is most useful for explaining this observa

Match each term to its scientific definition. 1.) natural world- 2.) theory- 3.) scientific method- A. everything that can be observed or explained scientifically. B. the procedure of scientific inquiry used to investigate natural phenomena. C.

The largest component of air is

Which statement is one of the three parts of a cell theory