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Biology, 22.06.2019 00:10
Which way do the nitrogenous bases in dna pair up? a. a and g; t and c b. a and c; t and g c. a and t; g and c d. a and a; t and t; g and g; c and c
Answers: 2
Biology, 22.06.2019 11:00
Fill in the blank 1. digestion occurs in the small intestine through the action of enzymes. 2. urea, excess water, and other waste materials are eliminated in a water fluid called 3. can cause infections by injecting dna or rna into hosts. 4. the human immune system produces in response to a vaccine, which later can bind to and destroy a pathogen if it invades. 5. are structures that link bone to bone at a joint 6. in the heart, blood flows from the right atrium to the right ventricle, where it is pumped to the the words i can use are: lymphocytes gliding pivot gas urine absorption dermis fulcrum lungs chemical viruses capillary vertebrae esophagus tendons antibodies synapses ligaments kidneys pathogens
Answers: 1
Biology, 23.06.2019 00:30
In 1859, the english naturalist charles darwin published a book entitled on the origin of the species. one of the major ideas that was presented in his book was the theory of natural selection. what was another idea that was presented in his book?
Answers: 1
Mathematics, 13.04.2020 01:11
Mathematics, 13.04.2020 01:11
Mathematics, 13.04.2020 01:12
Mathematics, 13.04.2020 01:12
Mathematics, 13.04.2020 01:12
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Health, 13.04.2020 01:12
Mathematics, 13.04.2020 01:12
Mathematics, 13.04.2020 01:12
Mathematics, 13.04.2020 01:12
Biology, 13.04.2020 01:13