The diagram shows a food web.

Which is the producer?

O grass

o grasshopper

O mouse

fox

Shrew

Snake

Mouse

Grasshopper

Rabbit

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True or False? __2 parents that are heterozygous for type A blood could have offspring with type O. __2 parents that are type AB could have offspring that are type O.

Why does a hot air balloon float? 1. The shape of the balloon provides lift. 2. The volume of the air displace by the balloon is less than the volume of the balloon. 3. The weight of the air displaced is less than the volume of the balloon. 4.

Dichotomous keys ask A. open-ended questions about animal behavior. B. open-ended questions about easily observable characteristics. C. yes-or-no questions about animal behavior. D. yes-or-no questions about easily observable characteristics.

The adult spinal cord ends between the level l1 and l2 of the vertebral column. True or False

Un avión que vuela a 2000 m de altura con una velocidad de 800 km/h suelta una bomba cuando se encuentra a 5000 m sobre el objetivo. Determinar A que distancia del objetivo cae la bomba y cuanto tarda la bomba en llegar al suelo.?

Which of the following does NOT represent an adaptation that would lead an organism to be successful? A. A wolf in a cold environment growing a thicker coat of fur. B. A caged chicken developing a longer wingspan. C.

What are the 3 things plants must be able to do

Ranchers historically have used genetics to produce new varieties of cattle. buffalo can tolerate both hot and cold temperatures but have meat that is not as tasty and tender as beef.

What is the term for a structure that has no use in an organism

Which phrase describes radiation? transfer of heat by the actual movement of warmed matter transfer of heat between two objects that are touching the process in which energy is emitted by one object, transmitted through space, and absorbed by