Who first proposed a system for classifying organisms?

Some of the tallest broadleaf trees are called yellow poplars. The leaves at the top of this tree must get water from the poplar's roots to stay alive. What characteristic of water underlies the transport of water from roots to treetop?

Emily sprains her ankle on her way home from school. Her mom suggests she use an "instant cold pack" to reduce the swelling. When Emily's mom hands her the cold pack, it is room temperature.

The use of sound waves to determine the depth of the ocean is called

Use the following description to answer the question (s) below. On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated, freshwater ponds that were once united.

The layer that contains both a single-celled pigmented layer and a neural layer in the eye?

Which force is primarily responsible for original horizontally

Cells use passive and active transport to move materials across cell membranes in order to maintain homeostasis. Which of the following is an example of homeostasis?

Why fossils are important and why sedimentary rocks have fossils?

Manny has contracted a virus that is destroying his body's immune system. manny most likely has:

When you exercise, your muscle cells use oxygen to convert the energy stored in glucose into the energy stored in ATP, which they then use to drive muscle contractions. When you exercise, your muscles need more oxygen.