Science 6. grade 6. can anyone answer these science questions soon as possible? i want the answers correct- 100% accurate.

are the following statements below true or false?

there are many food chains within a food web.

food chains in an ecosystem have consumers but no producers.

a food chain always begins with a producer because these organisms are the source of energy for other organisms in an ecosystem.

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins

Use the above pedigree for questions 1,2, and 3 1. what kind of genetic disorder is represented in the pedigree? a. recessive b. dominate refer to the pedigree in question 1. 2. is the mutated gene in this disorder located on a sex chromosome (x or y) or an autosome? a. sex chromosome b. autosome refer to the pedigree in question 1. 3. which generation has individuals that you are certain are heterozygous for the mutated gene? a. generation 1 b. generation 2 c. generation 3