Why must the heart contract very strongly to pump blood from the left ventricle into the aorta?

Earth is comprised of four systems, or spheres. Describe how these four spheres work together as a system.

A chemical reaction that transfers energy from the reactants to the surroundings is referred to as elastic. True or False?

What is the binomial nomenclature of a house cat?

How can two astronauts hear each other inside a space station but not outside a space station

Fruit is absent in? a. Mango b. rose c. pine d. sunflower

Why is the Golgi apparatus in the cell?

Fungi are necessary evil to humanity. discuss the pros and cons this assertion

You want to test the effect of sucralose on the growth of a plant. Design a study using the steps of the scientific method. What are the dependent and independent variables in this experiment?

Which of the following organisms does not rely on krill as a major food source? Adelie penguins Leopard seal Humpback whale Squid

When a predator catches its prey, it may appear that the prey species suffers. But there are benefits to this type of interaction for prey species as well. What are two way in which the prey species might benefit from the predator hunting them?