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Why is June the longest and dec the shortest
Due to the 23.5 degree tilt of the earths axis as it orbits the sun
How to calculate resistance
Remeber the triangle, V over I and R
Greenhouse gas positives
-without it the earth would be too cold for liquid water to exist. -radiation shielding as the ozone in the atmosphere absorbs 97-99 of the suns UV
greenhouse gas negative effects
-rising sea level due to ice pops melting -damages eco systems -extreme weather events (drought heatwaves and floods)
Exothermic reaction
A chemical process tgat releases energy, usually in the form of heat or light into its surroundings
Endorhermic reaction
A chemical of physical process tgat absorbs hear energy from its surroundings. Decreasing the temperature of the immediate environment.
Biochemical process
The essential enzyme-regulated chemical reactions occurring within living organisms to sustain life, growth reproduction and environmental response
Good bacteria’s
Lactobacillus- helps break down lactose Bifidlbacterium is crucial for gut health
Before the Big bang theory
• the entire universe was smaller than a pin head -extremely hot and dense
What is DNA
the molecule containing genetic instructions for development. Found inside the nucleus of cells Eg eye colour
Chromosomes
Long coiled strands of DNA in the nucleus The nucleus has 23 pairs of chromosomes totalling 46 in all
Gene
A section of DNA on a chromosome Give us our inherited characteristics
What is DNA
The molecule that carries gentif instruction for development
After the Big Bang theory
• the univers exploded creating time, space and matter. • the universe expanded