If each level in a food chain typically loses 90 percent of the energy it takes in, and the producer level uses 1000 kcal of energy, how much of that energy is left after the third trophic level

Heart disease is a noncommunicable disease because O O o it can be spread. it does not spread from person to person. it is contagious. it only affects individuals, not communities.

A wildlife researcher weighed all the raccoons that were trapped in suburban neighborhoods before they were released back into the wild. The researcher used this data to conclude that the raccoons in the state were getting heavier.

The physical space between the presynaptic and postsynaptic neurons is called the and the chemical that is released to signal across this space is called a

Which of the following proteins is vital to the process of recombination? a. RecA b. CroA c. HemA d. Gyrase e. Topoisomerase

Amniocentesis is a test in which fluid is removed from the uterus so the baby's genetic composition can be determined.

Suppose you had an enzyme that recognized a sequence of six nucleotides. What are the odds that this sequence would appear in a random chain of DNA?

Human blood consistes og blood groups a b and o however there is one ab which contains a and b in the same geno type what i this phenomenon called

Discuss four ways a scientist can prevent bias in scientific investigations.

What Gives Directionality To Carbohydrates?

Invertebrates are the most commonly found fossils because they: