earths atmosphere is moderately dense and is composed of 78 percent oxygen and 21 percent nitrogen true or false

Which of the following tissues and systems were involved in transpiration? Check all that apply. roots, stem, leaves, dermal tissue, vascular tissue, ground tissue

Name one mammal that lives in antarctica

The region of a prokaryotic cell where the bacterial chromosome (dna) is located is the

Two ways water travels from land to enter the ocean

The universe has existed for approximately

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass? the neutron and the electron the proton and the electron the proton and the neutron the neutron and the atom

The table below shows a list of radioisotopes and their half-lives. The radioisotope that has the longest half-life is the best to use in powering planet and space exploration vehicles because they can travel farther.

Describe briefly how non green plants get their food?

What was the science of classification and naming organisms based on the different characteristics called?

Which trait did Gregor Mendel examine from the pea plant when he planned his study? a plant height b color of the plant flower c traits that were easy to distinguish d all of the above