Which layer of the earth has the highest density and temperature

What gas is necessary for the candle to efficiently burn?

Two chromosomes have the following segments, where - represents the centromere: K L M • N O P Q R S T U V • W X Y Z What type of chromosome mutation would result in the following chromosomes? K L M • N O P Q R S T U V • W Z

Spores produced by the small male cone of a pine tree are produced by meiosis or mitosis

An element's atomic number is 39. How many electrons would an atom of this element have?

To determine the distance for far away stars like a few million light years away, scientists use

While Michael is sleeping, his eye muscles are moving, but all other skeletal muscles are at rest. Which of the following statements about Michael is true?

Which statements describe ways that science meets society's needs? Check all that apply A scientists investigate a new way to clean up spilled oil on land B scientist developed a procedure to collect water samples for experiments C scientist improve

if memory cells are always present after the first exposure to a virus, then why do people get the flu every year?

Why did scientist who study weather need more advanced technology

Describe how do organisms with a favorable trait increase in proportion compared to those lacking the trait