What do astronomers use to calculate the age of the universe? Select three options.

dark energy

the age of rocks on Earth

the age of the oldest stars

patterns of background radiation

how fast distant galaxies are moving away from us

What else is a seed plant have other than vascular tissues?

What types of biological molecules can blood transport safely?

The scientific attitude requires an open-minded humility because it involves a willingness to

If we were going to measure the distance between your house and the store, we should use meters centimeters kilometers millimeters

When energy is transformed from one form to another, the amount of energy A) increase B) decrease C) doubles D) does not change

A physician may be virtuous (kind, just, and honest) and still not know:

What is true of all eukaryotes? i need it asap

True or false: A beach that has an abundant sand supply is said to be a "healthy" beach.

5. Tay-Sachs disease is caused by a recessive allele. The frequency of this allele is 0.1 in a population of 3600 people. What is the frequency of the dominant allele, and how many of the 3600 people will be heterozygous for the condition

A male adolescent asks the nurse, "how will i know if i'm going through puberty?" the nurse discusses physical changes that usually occur, the first change being: