Which of these are common to all mammals?

type of reproductive system, brain size, skin

digestive system, heart, lungs

digestive system, number of toes, blood

kidneys, liver, skeletal structure

How many individual strands is dna composed of? 1 strand 2 strands 3 strands 4 strands?

Hess wrote that hot magma rose up into the rift valley at the mid-ocean ridges. The lava oozed up and forced the existing seafloor away from the rift in opposite directions. Hess called this idea seafloor drifting True or False

Can anyone give me an example for Hydrotropism?

What analogy can you create that compares to the structure of all four major macromolecules?

What evidence did Carl Linnaeus use to classify organisms

What is relative concentration of water in hypotonic solution?

How do scientists use fossils to study earth history

When does a baby's umbilical cord fall off?

Why might lower folic acid (a precursor to Tetrahydrofolate) levels in pregnant women lead to arn increased risk of birth defects for the baby?

When the body cells are hypotonic to the blood plasma, water will move from intracellular fluid to extracellular fluid?