If deuterostomes lack respiratory and excretory systems, then what lack respiratory and excretory systems? Answer choices: - deuterostomes - barnacles - cigarettes - graptolites - fish - humans - kalenchoes - birds
deuterostomes

If hot flashes can occur when menstruation stops occurring, then what can happen when menstruation stops? Answer choices: - excess fertility - more eggs produced - Smoking - menstruation - rapid expansion - Dehydration - massive damage - hot flashes
hot flashes

If gravity causes objects that have mass to be pulled down to Mars, then where does gravity cause objects that have mass to be pulled down to? Answer choices: - rocks - Large. - meters - matter - Mars - oceans - feet - ground
Mars

If arefrigerator is used for keeping chicken fresh, then what does a refrigerator keep fresh? Answer choices: - animals - heat - salt - oysters - canned food - grass - chicken - trout
chicken