Biology, 25.07.2019 11:30, witerose701
When mendel’s first generation pea plants were allowed to self-pollinate, the ratio of tall (dominant) to short (recessive) plants in the second generation was a) 1: 1. b) 1: 3. c) 2: 2. d) 3: 1.
Answers: 2
Biology, 22.06.2019 11:00, eweqwee3147
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, 22.06.2019 20:00, oktacos
Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b. hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.
Answers: 1
Biology, 22.06.2019 22:30, babyrocks7300
What is a food chain? a. different animals located in different communities b. energy transferred from the sun to plants and then to a series of living things c. rows of crops, such as lettuce, in a field d. animals using one another as food for energy and growth
Answers: 2
When mendel’s first generation pea plants were allowed to self-pollinate, the ratio of tall (dominan...
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