When a helium balloon expands and the volume doubles what happens to the density of the helium inside it?

How do I make a food chain?

One major advantage of sexual reproduction over asexual reproduction is that in sexual reproduction

Why can't penguins fly?

What concept, inspired by the work of Charles Darwin, proposes that the diversity of human cultures represent different stages of development, from simple to complex?

According to the hardy-weinberg principles, which of the following can prohibit genetic equilibrium? an equal number of individuals entering and leaving a population a large population no occurrence of natural selection no mutations

A person lets go of a hammer. Why does it fall?

What would be an appropriate evolutionary explanation of the fact that the ordering of some homeotic genes (e. g., Hox genes) on vertebrate chromosomes parallels the ordering of homeotic genes on fruit fly chromosomes? Group of answer choices

You can trace the lineage of the nco back to

How would your percent yield be affected if scraps from an aluminum can were used which is not pure?

From day 23 to 28 the progesterone levels are dropping. What effect will this eventually have on the endometrium?