Answer:
Explanation:
There are two types of photoreceptors in the human retina, rods and cones. Rods are responsible for vision at low light levels (scotopic vision). ... Cones are active at higher light levels (photopic vision), are capable of color vision and are responsible for high spatial acuity.
I would say #1 #3 #4 are the most reasonable options. Healthy food doesn't really affect the communication of a disease and ultimately does nothing to change it. Eating French fries isn't going to give you malaria, but an increase in migration of infected animals will. Especially those who are sold illegally or trafficked across borders. And people not taking their vaccinations has caused an increase in illnesses we have gotten rid of years ago, like polio. #3 is also reasonable since people who travel all over the world, even if they don't get sick, might carry foreign illnesses that perhaps other countries don't have vaccinations for and infect others.
I believe the correct answer from the choices listed above is the first option. The correct list of two illegal maneuvers in racewalking would be lifting and creeping. Although it is a foot race, it is different from running in that one foot must appear to be in contact with the ground at all times. "Lifting" and "creeping<span>" are the common terms used to reflect violations of the two rules of </span><span>race walking.</span> Hope this answers the question.
