Is it true or false scientists must reapeat an experiment for it to be usefuk?

A geologist finds a layer of rock that is made of coarse-grained foliated particles arranged into bands and splits into sheets when struck with a hammer. What type of rock did the geologist find? A. marble B. gneiss C. quartzite D. slate

Describe how the different areas of science (life, Earth/space, or physical) use different methods to understand their area of study?

You have been given a sample of quartz, which has a hardness of 7. How can you use this mineral to determine the hardness of other minerals?

What is the difference between biological response and Biological response modifiers?

Write the name of the chromosomal mutation underneath each chromosome in the left column

Which is the correct order of the processes responsible for the formation of sedimentary rocks? erosion, deposition, compaction weathering, cementation, deposition cementation, compaction, erosion?

Urine exits through what external opening on both male and female rats

What information can be inferred about genes that are located on different chromosomes? what information can be inferred about genes that are located on different chromosomes? these genes are always inherited together.

Bianca is very self-conscious about her weight. she indulges in strict dieting and often skips her meals. as a result, she was recently diagnosed with osteoporosis, an abnormal condition related to the thinning of bones.

All processes of moving materials across the plasma membrane are classified as either A) diffusion or osmosis B) passive or active transport C) phagocytosis or pinocytosis D) endocytosis or exocytosis