Models allow us to study events mathematically. why is that ? a) math is a much simpler subject for individuals than science. b) most inexperienced scientists can create a model with little or no training. c) natural forces can be converted to mathematical algorithms, allowing us to study natural forces safely. d) although it takes more money and effort, mathematical models save researchers their most important resource, time.

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.

i think that d. wind is the answer.   i missed the question when i answered a. currents.