How do you unlock survival endless in Plants vs Zombies?

Can you use bees wax to restore the color to leather prooducts? Do stick insects help the environment? Can just normal soap and water get rid of fleas? How do you remove millie bug from house plants? What is the best treatment for ticks? How do plants without flowers reproduce? What type of symmetry do sea urchins have? Does Evergreen Superband Insect Repelling Wristbands work? Is a squid an autotroph or a heterotroph? How do you pronounce phytoplankton? What is mollusk type of fertilization? Why do you have leeches on your house? What kind of bug is big brown colored with a hard shell? What are small raised bumps all over the body that look like mosquito bites? What is a nicktropica? Do proteins make up hair and spider webs? What is the function of cuticle at worms? Are bumblebees producers or consumers? What family does the yellow tube sponge belong to? What is the stick insect's kingdom?