earth science
an organism that eats only meat is a?
carnivore
this is the basic unit of matter
an atom
what is the smallest unit of life?
cells
what force keeps us on the ground?
gravity
what 4 things do plants need to survive?
water, air, light, and nutrients
give an example of a decomposer
fungus, bacteria, worm
what is the first element on the periodic table?
hydrogen
what is an example of a producer?
any plant
mass divided by volume equals?
density
this organelle is the power house of the cell
mitochondria
What are the 3 main layers of the earth
Core, mantle, and crust
what charge do electrons have?
negative
where is genetic material stored in a cell?
the nucleus
a ____ is a push or a pull
a force
what is the largest organ
skin
What forms when 2 tectonic plates collide?
Mountains
give an example of a physical change
water freezing, ice melting
what is the process of cell division called?
mitosis
what is the difference between speed and velocity?
velocity includes direction
which planet is closest to the sun?
mercury
name 1 step/part in the water cycle
evaporation, condensation, transpiration, run off, groundwater, precipitation
what is the center of an atom called?
nucleus
what rigid structure is only found in plant cells?
cell walls
this type of energy is stored energy, due to an object's position or condition.
potential energy
what does DNA stand for?
deoxyribonucleic acid