Match the following circulatory systems with the correct animals.

1. closed circulatory system

2. two-chambered heart

3. four-chambered heart

a) fish b) earthworm c) birds

When attempting to decipher the relative ages of strata in a stratigraphic column, it is important to look not only at the positioning of the strata but also at their A. elevations B. distributions C. rock types D. colors

A mutation is considered positive when it

What are the three major components of a cladogram?

Elizabeth is testing the effects of soil addictive on fruit production at an apple orchard. Elizabeth would like to find out if the soil additives increase the mass of the apples. What tool will Elizabeth need to order to complete her research?

What does the genome maps of hedgehog and a sloth allow the scientists to determine?

True or false, in the water molecule, electrons are equally shared by hydrogen atoms and oxygen atoms

What may happen as sediment and decaying organisms build up in a pond

Creatures that are poorly suited to the environment do not generally weaken the entire population because A. The population protects its own B. They often die before they can reproduce C. All populations have some weak members D.

Summarize the process of Transcription in your own words.

A nurse cares for a client with a stage ii pressure ulcer on the right hip. the nurse anticipates finding what type of appearance to the skin over this area?