Which of the following can be used by scientists to date the sediment layer they are found in? Select all that apply.

Your lab microscope is "parfocal." What does this mean? A - the specimen is clearly is focus at this depth. B - the slide should be almost in focus when changing to higher magnifications C - you can easily discriminate two close objects as separate

Estrogen is a hormone that stimulates breast development, releasing of eggs from ovaries, and regulates the menstrual cycle. Is this gene turned on or off in small children? explain

Describe the organization of an ecosystem from smallest to largest.

Which of the following organs aid in protection against pathogens, excretion of wastes, and body temperature regulation? A. Skin B. Bicep C. Femur D. Stomach

What is accumalation?

Why is it necessary to cool a hot supersaturated solution slowly during a recrystallization?

Name the two energy-equivalent molecules that contain three phosphates as part of their structure. what makes these two molecules different? how many high energy phosphate bonds do they contain? nutrition

During what period of time has the sunbelt region of the u. s. grown most quickly?

The axial skeleton includes the A) vertebra, skull, and ribs B) hip bones, knees, and feet C) shoulder bones, elbows, and hands D) bones of the fingers and toes

After transcription, nuclear RNA is capped, polyadenylated, spliced. After successful splicing, proteins are added to the mature mRNA at the exon junction complex and then transported to the cytoplasm.