In many oogamous organisms cells are produced in larger numbers than cells.

The oogamous organisms are those who practice the oogamy form of reproduction. The oogamy is a form of heterogamy (the male and female gametes are different) where the female gamete is much larger than the male gamete. In such organisms, the female gamete (egg cell) is produced in smaller number while the male gametes (sperm cells) are produced in much larger numbers.

Hence, the blanks can be filled with 'egg and sperm' respectively.

well first you need the sample of the temperature and gas level. i couldnt write a hypothesis unless i had some data. i think temperature changes will effect volumes of gas because gas changed into a solid or liquid at specific temperatures.

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!