Scraping oneself on a contaminated object may cause infection, and an infection is an invasion of the body by bacteria. Given these facts, scraping oneself on an object that is what, may cause an invasion of the body by bacteria among the following options: - unknown - safe - threatened - harmful substances - Pollution - foreign - barrel-shaped - contaminated
contaminated

(Question)
Sex hormones are chemical messengers that control sexual development and reproduction, and androgens are male sex hormones. Given these facts, androgens and what kind of messengers among the following options: - animals - interact - organ - humans - chemical - PDAs - allow growth - kinetic
(Answer)
chemical

Ques: Harming an animal species causes that animal 's population to decrease, and ecology is the study of populations or communities. Given these facts, ecology studies something that decreases when an animal species is what among the following options: - omnivores - harmed - deadly - dead - haploid - negative - dormant - inactive
Ans: harmed

(Q).
Migration is a type of movement that changes population size, and migration Much of the life of a spiny lobster involves travel. Given these facts, a life involving travel is a type of movement that changes what among the following options: - Continents drifting - the environment - Animal survival - important habitats - major threat to health - population size - an organism's body - Something to move
(A).
population size

Ques:Storms cause bodies of water to increase amount of water they contain, and lakes are large bodies of inland water. Given these facts, what cause the amount that lakes contain to increase among the following options: - nutrients - icebergs - bacteria - storms - lily pads - excretion - flooding - droughts

Ans:storms

Most invertebrates have a nervous system, and invertebrates Among the invertebrates, the largest number of species are insects. Given these facts, what do insects have among the following options: - four limbs - liver - sensory neurons - epidermis and dermis - lizards - spiders - important habitats - nervous system
nervous system