In which of these phases is mitosis most important?

A. a tiger cub is born

B. a tiger cub learns to walk

C. a tiger cub begins to grow

D. a tiger cub play fights

Explain the difference between self pollination and cross pollination

How many neutrons are in the isotope carbon-14

2) Trilobites are useful as index fossils, because each species existed for a ...

Adam is a teenager with a huge appetite. he has an uncontrollable urge to eat large portions of junk food within very short intervals of time. he is embarrassed by his eating disorder and hence prefers eating alone.

Animals behave in order to satisfy ___ needs.

During dna replication in a human cell, 6 billions bases must be paired properly. which characteristic of dna best allows for high level of accuracy during this process

Which of the following actual (i. e., real) products of biological activity is not likely to be a source of the increases in greenhouse gases observed in recent history? A.

A population with 65 A1A1 individuals, 55 A1A2 individuals, and 10 A2A2 individuals is in Hardy-Weinberg Equilibrium. Hint: For this problem assume if the expected value is within 3 of the observed it's in HWE.

What is the expected effect of hyperventilation on heart rate? why does this change occur?

In what ways are cellular respiration and fermentation alike? in what ways are they different?