4. Samantha believes that flowering plants produce more flowers when they are given fertilizer. She designs an experiment in which three rose bushes are each

given 100 grams of a different type of fertilizer. She observes the plants for four

weeks and records the number of roses each bush produces. What element of

experimental design is missing from Samantha's experiment?

ocean expansion, global warming is melting icebergs and causing water levels to rise.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.