The mouth of the Mississippi River delta opens into the Gulf of Mexico. Sediment from the river is pushed out into the ocean. Shipping channels in this area require regular maintenance to push
away sediment so channel depth can allow ships to travel in and out of the Mississippi River
How do you predict this area might change after 100 years with no human intervention?

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?