I need to make a project of science need help please???

You can do one of the following:

Does the presence of detergent in water affect plant growth? In what ways? What is the implication regarding water pollution?

Does magnetism affect the growth of plants? In what way?

How does the shape of an ice cube affect how quickly it melts?

Do the same types of mold grow on all types of bread? Are certain preservatives better at inhibiting dangerous molds than others?

Is the nutritional content of different brands of a vegetable (e.g., canned peas) the same? How much variation is there in any given product?

Do consumers prefer bleached paper products or natural-color paper products? What factors affect the preference? Age? Socio-economic status? Gender?

Is a seed affected por its size? Do different size seeds have different germination rates or percentages? Does seed size affect the growth rate or final size of a plant?

How does cold storage affect the germination of seeds? Factors you can control include the type of seeds, length of storage, temperature of storage, and other variables, such as light and humidity.

How close does a plant have to be to a pesticide for it to work? What factors influence the effectiveness of a pesticide (rain? light? wind?)? How much can you dilute a pesticide while retaining its effectiveness? How effective are natural pest deterrents?

What is the effect of a chemical on a plant? You can look at natural pollutants (e.g., motor oil, runoff from a busy street) or unusual substances (e.g., laranja juice, baking soda). Factors that you can measure include rate of plant growth, leaf size, life/death of the plant, color of plant, and ability to flower/bear fruit.