PLEASE HELP, WILL MARK BRAINLEST, AND WILL FIVE POINTS:) A student designed this model to show two positions of Earth with respect to the sun.

Picture shows the sun in the center of an elliptical orbit. Earth is placed in its orbit at two positions, on the right of the sun and below the sun. A point in the northern hemisphere of Earth to the right of the sun is labeled B. A point in the southern hemisphere of Earth below the sun is labeled A.

Based on the diagram, which of these conclusions is correct about the seasons at Location A and Location B?

It is fall in Location A and summer in Location B.
It is summer in Location A and fall in Location B.
It is winter in Location A and spring in Location B.
It is spring in Location A and winter in Location B.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

the alkaline earth metals (beryllium (be), magnesium (mg), calcium (ca), strontium (sr), barium (ba), and radium (ra)) are a group of chemical elements in the s-block of the periodic table with very similar properties: shiny. silvery-white. hopefully this ? i didn't fully understand the question