Water movement into and out of cells is of prime importance to all living things. A single-celled organism has star-shaped organelles called contractile vacuoles to move
water from inside to outside the cell. The data presented in the table below were
obtained in an experiment in which the organism was placed in water with different
salt concentrations,
High

The rate at which the contractile vacuole contracted to pump out excess water was
recorded. How could you explain the observed relationship between the rate of
contractile vacuole concentration and the salt concentration?
E. When the salt concentration outside the cell is very high, diffusion causes water
to move inside the cell, and the contractile vacuole has to contract more rapidly.
G. When the salt concentration outside the cell is very low, diffusion causes water to
move outside the cell, and the contractile Vacuole has to contract more rapidly
H. When the salt concentration outside the cell is very high, diffusion causes water to
move outside the cell, and the contractile vacuole does not need to contract as
rapidly
1. When the salt concentration outside the cell is very low, diffusion causes water to
move outside the cell, and the contractile vacuole does not need to contract as
rapid

it is prolly d and c and f

picture a world where computers are building made-to-order personalized robotic arms and synthetic organs, drones are circulating above mars! due to the rapid growth of technology, the future has never been more unpredictable, and it presents a huge challenge in education: we are teaching students how to work in a future that we have never been unsure of. it is widely predicted that in eight years’ time, there will be more jobs in the fields of science, mathematics, technology and engineering than in any other discipline. and, as the technology continues to develop, it will soon become clear that addressing social problems will involve more innovative thinking, and analytical and technical knowledge than ever before. undeniably, there are no subjects that encourage innovative and creative thinking, deep thought, problem solving and independence more than the stem subjects. while it is widely commented on that there is a need to reimagine the ways stem subjects are taught in schools by embracing a more interactive and innovative approach to appeal to more students, it should come as no surprise that some of the most reputable educational organizations in the world are already implementing changes to embrace stem. harvard, for example, announced in 2014 that they were increasing their computer science faculty by over 50% and has since introduced computer science as a core subject for all freshmen. the urgency of supporting stem subjects at a young age is becoming more relevant than ever, as adopting a keen interest in the curricula needs to happen early. however, beyond the age issue is one of gender.

let me know if you need more

c.           is the correct answer

i think the answer is a.keratin is the pigment responsible for skin color.