the distribution of invertebrates in a habitat depends on the light intensity

how do I find the grade boundaries for aqa specimen paper's for gcse?

Are nerve impulses and electrical pulses the same thing?

Sam the Sailor has an unmagnetised nail hanging on a piece of string on his boat. Why won't it help him find his way in bad weather

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when metal it forms a new chemical called an

can a plant survive without foots?

How the structure of capillaries is designed for efficient exchange of materials between the blood and the cells of the tissues

I did really well in seperate sciences GCSE with an A* in biology, chemistry and physics, I was wondering if there were any companies that offered 17 year olds to be able to tutor GCSE students, I know there;s some, I just can't remember the names?

In terms of cooking

can you name two solids that dissolve in water?

Can you see the sun from earth?

Interested to geoscience

How to cats manage to drink milk from a saucer without spilling it?

Explain why golgi structures are very noticeable in cells lining the stomach and intestine?

  I was reading this bit off the internet about coast because we have a test tomorrow and i need to revise. I found this bit of text I don't know what it means. 'following the line of steepest gradient'. It's to do with Lond shore drift. I think it means its steep or something. please help!

Explain electrical activity within the heart that co-ordinates the cardiac cycle

definition of energy and electricity?

Who has a PhD or MSc in Dentistry?

that all i want to know help me please 🙂

is there a case to undertake population screening for diabetes in the uk and why?

do cats see in black and white or i color

this is for chemistry case study i have to complete by tomorrow i'm stuck i don't know what to do for the science, for and against sections of my case study if i don't get help i will fail my chemisty GCSE!

Just frightened, im lyk that and I cant contorl it 🙁

1 day left, need to cram some revision ahhhhh

What did he do? 😀

36 questions about electricy circuts

The carnivore releases a greater proportion of energy in respiration than the herbivore. suggest a reason for this?

What are the names of the oxide and acid you use to create copper nitrate?

need resources and plan to write my topic essay

even though I revised loads, how come I only got 36% on my science test?

lots of exams coming up with tonnes of revision! any advice for revising!?

help me on my stemcell research homework

Can you please describe the formula of velocity?

Hi I have to sit a GCSE EQUIVALENCY TEST for science at Canterbury Christ Church - does anyone have any advice or know what the paper entails?

Male chickens carry two Z sex chromosomes, while female chickens carry one Z sex chromosome and one W sex chromosome. Located on the Z chromosome is a gene for barring. Barred feathers have black and white stripes. The barred trait is dominant to the unbarred trait. Chickens have a fleshy growth on top of the head called a comb. An autosomal trait called rose comb is dominant to a trait called single comb. An unbarred male heterozygous for the rose-comb trait is crossed with a barred female with a single comb. What proportion of the resulting progeny are expected to be barred males with single combs? Give your answer as a fraction or as a decimal to the nearest hundredth.

The con and pro of cloning?

why is the number of mitochondria high in goblet cells?

if you get a C in your coursework for additional science what do you need in your exam to overall get a B or an A? Thanks.

how are whales adapted to its enviroment

Hi Can someone give me an easy explanation of how to understand working out half lives for this question: Zircon crystals found to have a 207 Pb/235U and ratio of 0.55. calculate the age of the crystals? please note i am not asking for the answer just to be shown how to calculate it in an easy way please as i am abit confused by my papers, i have started to calculate it but then think i work it out wrong, thank you.

what is a protein molecule called?

I'm applying for veterinary medicine, but any tips on style etc would be greatly appreciated.

Calculate the surface energy of the (100) surface of niobium. The enthalpy of atomization of niobium is 745 kJ/mole. Express your answer in units of J/cm2.

A formation energy of 1.11 eV is required to create a vacancy in a particular metal. At 777oC there is one vacancy for every 22,200 atoms. At what temperature will there be one vacancy for every 11,100 atoms?

A photon interacts with a ground state electron in a hydrogen atom and is absorbed. The electron is ejected from the atom and exhibits a de Broglie wavelength of 0.468×10−10 m. Determine the frequency (in hz) of the interacting photon.

Help me i need science help Its all about sedimentary and metamorphic rocks

2) What do you think the appearance of a roc tells us about the chemicals which make up these rocks?

3) Describe how you are able to match sedimentary rocks to their children rocks (metamorphic)?

4) Take a piece of limestone and squeeze it. Where do you think there is enough pressure to change this sedimentary rock into a metamorphic rock?

5) The metamorphic rocks in the Lake District, California and Mt Everest have all been changed by heat and pressure. Explain why the rock types found in these 3 places are different.

if you dont know anything, please help with keeping it active!

help with half lives to calculate age of rock

i don't know what like Ib4, and Ib6 Ea4 etc mean

i need to study more on my sience cananyone help?

hoe dose the moon control the season on the earth

i have to reasearch magnetism, so i need to know what the following mean,BY THE WAY, sorry it's long; -drag -water+air resistance -non'contact force -electro magnet -north-seeking pole thanks guys:)

which property makes copper suitable for making pipes for hot water

A ship travels at a constant speed of 25 kilometres per hour (Kph) in a straight line from port A located at position (x_A, y_A) =(-100, -100) to port B at (x_B ,y_B )=(300 ,100). A) Find parametric equation for the line of travel of the ship .your equation should be in terms a parameter t, and should be such that the ship is at port A when t=0 and at port B when t=1.

(b) During its journey ,the ship passes two lighthouses ,L_1 and L_2, which are located at positions (0,0) and (200.0), respectively. (i) write down expressions ,in terms of the parameter t of part (a) ,for the squares d_12 and d_22 of distances between the location of the ship at parameter value t and the lighthouses L_1 and L_2 respectively .Simplify your results. (ii) Completing the square for your result for d_12: d_12=200000((t- 3/10)2 + 1/100) Explain how d_1 varies as t increases from 0 to 1 .Determine the shortest distance between the ship and the lighthouse L_1, to the nearest kilometre

How could biofuels and hydrogen fuels help us to help our environment?

i was given the task to craete a magazine article about richard hammonds dragster crash but i have to use the topic P4 to include force diagrams but i just simply dont know how the forces caused the crash in the first place

how do bats use echolocation

i am doing revision for a biology gcse and this is on the syallbus and i havnt got a clue. The questions next to it are: what are genes and how do they affect the was organisms develop? why can people look like their parents , brothers or sisters but not be identical?

How do i reconise acids?

how do lubricants reduce friction ?

how do microbes enter the body

How does a guitar (acoustic) make its sound louder?