Two ships are can only unload their cargo during high tide due to a shallow harbor. it is low tide at a harbor at 9: 00 am.

after the first ship unloads, the tide is already going out and the second ship must wait for the next high tide. at what time will the second ship be able to unload?

a
the shallow harbor is too dangerous, and he should turn away and leave.
b
he must wait until around 3: 00 pm the next day.
c
he must wait until 9: 00 pm.
d
he must wait until 12 hours have passed from the time the first ship unloaded.

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.

Use the drop-down menus to match each part of the scenario to the correct scientific practice. akira records the speed of a reaction without a catalyst and then with a catalyst. akira creates a reaction without a catalyst and repeats the reaction with a catalyst. akira turns in a written lab report to his science teacher. akira wonders, "will adding a catalyst speed up this chemical reaction? " akira writes in his notes that adding a catalyst sped up the chemical reaction because the catalyst lowers the activation energy needed to get the reaction started.

Animal cells have which of the following characteristics? select all that apply.