What is true about scientific knowledge?

A. It isn't based on observation

B. It changes as new evidence is found

C. It is agreed upon by all scientists

D. It is rarely proven wrong.

Is it D?

Bird feathers are modified scales. a. True b. False

Decreased number of alveoli in the lungs leads to respiratory distress because:

Of a DNA polymerase recognizes a guanine nitrogenous base on the template stand witch nitrogenous base will it polymerize to the growing complementary strand

What are signs that an infant has had enough eat? select one: a. falling asleep b. turning head away or not paying attention c. all of these choices are accurate. d. becoming playful?

If a person is heterozygous for the Δ32 allele of the CCR5 gene, how many of the four daughter cells produced by meiosis will have the Δ32 allele? 1 2 4 Varies

Which genotype is homozygous? a. XxTt b. XXTt c. xxTT d. Xxtt

In what organelle does the process of respiration occur

In the case of the salt NaCl, chloride (Cl-) gives up an electron that is taken by sodium (Na+), this is an example of . A hydrogen bond A covalent bond An ionic bond A non-polar molecule

What stores information in a cell? a. proteins b. carbohydrates c. lipids d. dna

In Tinker v. Des Moines, why did the Supreme Court rule in favor of the students who wore armbands?