Eratosthenes determined the circumference of Earth by conducting an
experiment. Put his steps in order as they correlate to the scientific method.

Conduct an Experiment: Measure the angle of shadow at high noon
in Syene and Alexandria,
Make Observations: In Syene, the sun's rays are vertical at noon.

At
t the same time in Alexandria, the rays are 7.2 degrees from the
vertical.

Draw Conclusions: The angle represents the amount Earth curves
between Syene and Alexandria. This is 1/50 of a complete circle and
1/50 of Earth's circumference.

You have a solution that contains phospholipid vesicles in a test tube. these vesicles have phospholipid bilayers, but do not contain any membrane transporters. you add a number of different molecules to the solution, and wait a period of time for them to equilibrate. if you could measure the concentration of each molecule, for which of the following would you expect to measure equal concentrations inside and outside of the vesicles? assume for this question that the overall osmolarity inside and outside the vesicles is the same (that is, there is no appreciable diffusion of water across the membrane). (select two answers) an amino acid with a hydrophobic side-chain a small non-polar molecule a negatively charged ion a small polar molecule a small lipid hormone

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

In the desert, saguaro cacti, owls, horned lizards, and fire ants all share the same space. which of the following can be considered a population? question 9 options: all plants in the same area all cacti in the same area all species in the same area the lizards and the ants