Question 6 The doubling period of a bacterial population is 15 minutes. At time \( t=100 \) minutes, the bacterial population was 60000 . What was the initial population at time \( t=0 \) ? Please enter a whole number Find the size of the baterial population after 4 hours. Please enter a whole number Question Help: Video 1 Video 2 Message instructor

Take Test: Frog-Amphioxus development Arrange the following statments showing the normal series of development 6. \( \hat{v} \) The neural crest cells separated 4. \( \hat{v} \) The neural tube separated from the dermal ectoderm 1. \( \hat{v} \) Ectodermal cells invaginate inwards 2. \( \leqslant \) Formation of neural folds 3. \( \approx \) The two neural folds attached toeach other at the midline 5. \( \% \) The neural tube formed.

What was the indication to Richard Owen that the fossils he had found were not like other reptiles? A) They were found in climates where scientists know reptiles cannot survive. B) They had five vertebrae, and their limbs did not sprawl t the side, but were upright. Chey did not have any vertebrae, and their limbs sprawled out to the side rather than upright. (D) They were much smaller than any other bones that had ever been found.

(4) Como los animales Puede responder a los estimuios internos y exterinos.

Why is Ardi such an important development? (A) It proves the connection between Antarctica and Australia. B It shows fossil records of how interconnected all of humanity is. (C) It lends credibility to the idea that humans originated in Mongolia. (D) It is even older than Lucy, another human ancestor fossil.

According to the text, how is the water amount reduced in underground aquifers? (A) Plant roots remove the water. (B) Snow melts and soaks into the ground. (C) Gravity moves the water into streams. (D) People pump water from them.