The series of changes is called

Which of the following is the cause for different seasons on earth? A. The direction earth spins around it's axis B. Changing levels of gas compositions throughput the year C. The distance from earth to the sun D. The way earth has a tilted axis

What is one specific form of diffusion

The genetic information about particular biological traits encoded in an organism's dna is called the

Which organelle appears as a stack of membranes? a. mitochondrian b. vesicle c. cell membrane d. Golgi apparatus

cells use sunlight to make their own food. which structure allows plant cells to perform this function

The following is an excerpt from the case study "It's All Greek to Me": Dr. Stephens calls Mr. and Mrs. Stamos [and tells them] ... 'I am sorry to give you bad news. Nikoleta does have anemia [and] Nikoleta's disorder has a genetic basis.

How did Francesco Redi disprove the idea of spontaneous generation? A. He showed that flies did not grow from meat that was not exposed to air. B. He showed that flies did not grow from meat that was exposed to air. C.

Why do scientists use indirect methods to study the ocean floor? answer?

Which characteristic distinguishes the five groups of fungi? number of cells reproductive structure type of hyphae method of feeding

Which of the following occurs while homologous chromosomes are paired up? A. They create 2 haploid cells. B. They contain 6 chromatids. C. They exchange portions of their DNA. D. They produce two diploid cells.