Small, hard-shelled animals called barnacles attach themselves to the bodies of some whales. This increases the barnacles' chances of finding food. The whale is unharmed by the barnacles What type of relationship is this?
O mutualism
commensalism
O parasitism
O predator-prey

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

Express the following number in scientific notation. 0.026890 =

Define a is a tiny pavket of energy