What element is required to build red bloold cells?

Iron

Zinc

Copper

Nickel

Describe the properties of the sun

What part of contingency planning process came up short (ir, bp, or cp) ?

The table shows the commonly eaten foods of some organisms. Commonly Eaten Foods A. Vegetables, meat, chicken B. Insects, fruits, seeds C. Grasses, barks, twigs, acorn D.

Name the relationship between the alligators and the small mammals, birds, and reptiles. Describe how the change in the alligator population would affect the food chain of the swamp over time.

Which division in meiosis is more similar to mitosis? In which division do sister chromatids separate from each other? Meiosis I; meiosis I Meiosis I; meiosis II Meiosis II; meiosis I Meiosis II; meiosis II

A sedimentary rock is found to be 300 million years old. Which type of organism is NOT likely to be found in the rock? a) insects b) mammals c) fish d) land plants

James is making models of plant and animal cells using objects supplied by his teacher to represent organelles. For one cell, he will place the objects in a shoebox. First he fills a balloon with water and places it in the shoe box.

What holds DNA and controles cells activities

Usually, a mutation in the promoter region of an operon causes reduced levels of synthesis of the proteins encoded by that operon. Occasionally, a mutation in the promoter region actually causes increased levels of synthesis.

Genes do not exert the only influence on personality. therefore,: