Why would an active brain cell require many mitochondria?

Describe how genetic mutations alter the dna sequence and may or may not not affect phenotype

Which of these is not a factor that influences animal growth? a availability of food b gravitational force c genetic information d inherited diseases

The Earth's systems are all interdependent?

Describe the functions of two of the organs

Sources of biological hazards? Select all that apply. Water Soil Animals Plants Pathogens Human blood or bodily fluids

Recognize and use signal words, Assignment Signal words let you know what's coming next in a sentence. Signal words show relationships between ideas. Use the drop-down menus to identify the signal words in each sentences.

Which processes are caused by convection currents in the mantle? Check all that apply. 1. earthquakes 2. ridge push 3. tsunamis 4. slab pull 5. volcanic eruptions 6. subduction

Imagine that you are studying the food preferences of a lizard species across its range. you have hypothesized that because these populations are fairly separate from one another, the lizards have evolved different food preferences.

An animal cell (left) and a plant cell (right) are shown. Which organelle labeled x in the diagram is found in both plant and animal cells

Where is the name of the process by which coal is taken from earth after the layer of ground on top of it is removed? A) Underground mining B) Coal rig mining C) Strip mining D) Water-blast mining