Cells
Solar System
Ecology
Genetics
Periodic Table, Atomic Structure
100
Building block of life

What is a cell? 

100

Has complex system of rings

What is Saturn?

100

An area with very little rain and extreme temperatures like hot days and cold nights

What is a desert?

100

Genes an organisms has

What is Genotype

100

Flourine, Chlorine, Bromine, Iodine

What are Halogens?

200

Bunch of different cells doing the same job

What is a tissue?

200

Jupiter

What is the largest planet in solar system?

200

The first species to enter an area.

What is Pioneer Species?

200

Traits an organism expresses

What is Phenotype

200

Vertical column in periodic table

What is a group or family

300

Process by which prokaryotes divide

What is Binary Fission?

300

Dirty snow balls made of dust, rock particles

What are comets?

300

Reprocessing materials to be reused as something else

What is Recycle?

300

The passing of traits from one generation to another.

What is Heridity?

300

Helium, Neon, ARgon etc

What are Noble gases?

400

Cell walls of plant cells are made of this

What is cellulose?

400

Earth is not tilted towards or away from the sun

What are equinoxes?

400

One Organism benefits from the relationship while the other remains unaffected

What is Commensalism?

400

An organism with allele Xx or Yy

What is homozygous

400

When atoms share electrons.

What is a chemical bond?

500

Bacteriophage

What is a virus that infects bacteria?

500
Happens when moon is between the earth and the sun

What is Solar eclipse?

500

They make their own food. Plants, algae are some examples

What are Producers

or What are autotrophs

500

When all of the individuals of the species die.

What is Extinction?
500

Positively charged particles in an atom

What are protons?