factor to be tested
What is a variable?
basic metric unit of length of length or distance
What is the meter?
permanently frozen ground and has reindeer and grasses
What is tundra?
transfer of pollen from male to female reproductive structure
What is pollination?
provides structure, and supports and protects internal organs
What is skeletal system?
one celled
What is unicellular?
amount of matter in something
What is mass?
usually warm temperature and very little rainfall
What is a desert?
a plant embryo and a food supply inside a protective covering
What is a seed?
transports nutrients and wastes to and from all body tissue
What is circulatory system?
organelle used by cell for storage of various materials
What is a vacuole?
basic metric unit of mass
What is the gram?
made up of coniferous forests with many evergreens
What is a taiga?
structure that contains one or more matured ovaries
What is the fruit?
carries air into and out of the lungs
What is the respiratory system?
pear shaped organ in the female in which the embryo develops
What is the uterus?
amount of space an object takes up
What is volume?
receive large amounts of rain and very warm temperatures
What is a rain forest?
vascular tissue that carries water upward from the roots to every part of the plant
What is xylem?
controls and coordinates body movement and senses
What is the nervous system?
parts of an animal's body that are not used anymore
What is a vestigial structure?
measure of the amount of heat energy something contains
What is temperature?
area on earth with changing seasons and trees that shed their leaves in the winter
What is a deciduous forest?
egg or sperm containing 1/2 the number of chromosomes
What is haploid?
provides protection against infection and disease
What is the immune system?