Why do we make a working copy of a DNA molecule?

1. Is a butterfly more closely related to a worm or bird? 2. Which of the following groups of organisms are more closely related: group one-earthworms, spiders, jellyfish; group two-frog, trout, centipede? why? 3.

What are the four processes of respiration? be sure to define ventilation?

Inferring birds such as darwins finches are adapted to occupy highly specific niches. would this adaptation make it easy or difficult for such birds to adapt to environmental changes?

How do you identify a pure metal if you have a balance of a graduated cylinder and a table of densities for metals?

What is the moonsoon

Which of these organisms would be a producer? A. fish B. grasshopper C. flower D. snake

A 75 year old man need a replacement heart valve. he lives alone and cares for himself. is a mechanical or biological heart more suited for him

Explain climate change in the past 100 years

1._Mentions eukaryotic cells 2._Mentions prokaryotic cells

What type of cell destroys dead bacteria killed by T and B cells