1. marine scientists get information about aquatic populations from which of the following sources?
- news reports
- helicopter pilots
- commercial fishermen
- individuals on the beach

2. countershading is an example of
- a trait unique to sharks
- a technique used for hunting
- an adaption to the environment
- the issue created by light in the ocean

3. phytoplankton is the first link in the food chain.
- true
- false

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis

When plants use sunlight to make food, the energy of sunlight is

Which of the following is a good definition for the word adaptation? question 1 options: a trait that an organism survive and reproduce in its environment. a change in an organism's environment. the way in which animals obtain food. a temperature change that can cause the extinction of plants and animals.