The main source of organic matter in soil

What do all viruses need to reproduce?

Chromosomes are lined up in the middle of the cell during which phase of mitosis?

Why can't a moss grow to be as tall as plants that have vascular tissue?

Which two statements about composite materials are true? -They're made up of more than one substance. -They have the same or similar properties as the materials used to make them. -They're always made of metal. -They're readily available in nature.

What is an important characteristic of the plant cell

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

On which molecule will you find the anticodon?

in a population of plants, the allele for long stems (S) is completely dominant over the allele for short stems (s). If 35% of the population has short stems, calculate the percentage of the population that is expected to be heterozygous (Ss).