The organs of the endocrine system produce chemical messengers called enzymes. true or false

A sample of human DNA consists of 30% adenine and 20% guanine. Which is true about the remaining nucleotide • A DNA has 20% adenine and 30% guanine. B DNA has 30% thymine and 20% cytosine. • C DNA has 20% uradil and 30% cytosine. • D.

What are some biological hazards? Choose all that apply. •water •soil •animals •plants •pathogens •human blood

Name 2 parts of the nervous system and explain what each part does

Why is carbon so important to our study of biological molecules

Which geochemical cycle involves mantle convection? Nitrogen Tectonic Hydrologic Carbon

Freediving is an activity in which a person dives, sometimes to great depth, without the use of scuba gear. the diver must hold his or her breath for the duration of the dive.

Scientists have developed a synthetic substance that can ___. 1. be used to replace damaged brain tissue 2. conduct, or transmit, nerve impulses 3. replace damaged nerve tissue 4. grow artificial limbs

Scientists use a standardized taxonomic system to separate organisms into hierarchical groups based on similarities and differences in their structural and genetic characteristics Which of the following best explains why a standardized

How is the accuracy of a scientific claim evaluated

Which of the following are examples of effects of climate change on living things?