Ineed a testable statement/problem.

my science teacher said the 5 statements/problems i gave him were common knowledge. i need a simple, testable statement/problem i can make a hypothesis and experiment on over the next few hours. multiple answers would be great. you, creative people.

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

Which characteristic should describe all evidence collected by a scientist? true obvious objective subjective

Which of the following is an example of competition a. the leaves of a tree prevent a small shrub from getting sunlight. three species of birds feed a different heights in the same tree. b. three species of birds feed at different heights in the same tree c. zebra and giraffe’s feed on different grassland plants d. cats living in two different homes eat the same brand of cat food.