What kind of change causes iron to rust?

A state change

B physical change

C freezing reaction

D chemical change

All energy is any ecosystem starts as

Which of the following is the number of chromosomes in a haploid cell?

Fungi are classified into how many groups? 1 group 2 groups 3 groups 4 groups

What is the process by which the body takes in and uses food?

he hormone oxytocin Select one: A. increases a woman's appetite during pregnancy. B. reduces the ability of blood to clot during the birth process. C. enables the "let-down" reflex to occur when a woman breastfeeds her baby. D.

Explain the difference between repetition and replication.

What information does a food web show that is not demonstrated on an energy pyramid

Suppose a dye for staining cells stains the region where ribosomes are made. what would you expect to see inside the stained cells nucleus?

Which of two particles have the same mass but opposite charges

How food wastage contribute to loss of energy and global warming?