PLS ANSWER ASAP Before a cell divides, it must replicate its DNA. Which of the following best describes the conservation of DNA?
The two strands of a DNA molecule separate and an exact copy of each strand is synthesized
The two strands of a DNA molecule separate, and a complementary strand is synthesized
from each original strand
The two strands of a DNA molecule unwind, and an exact copy of one strand is synthesized
The two strands of a DNA molecule unwind, and a complementary strand is synthesized from
one of the original strands

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.

The image below shows a weather service map. which details best describe this map? check all that apply