When the conditions are favorable for a population at low density, such as when a species colonizes a new environment, population growth is typically
A) exponential.
B) logistic.
C) tangential.
D) dynamic.
A
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The smallest unit that retains the chemical and physical properties of an element is a(n) ____
a. proton b. compound c. molecule d. neutron e. atom
Which researchers showed that DNA is the genetic material?
A) Watson and Crick B) Hershey and Chase C) Garrod and Griffith D) Meselson and Stahl
Which stage of development carves up the zygote’s cytoplasm?
a. gamete formation
b. cleavage
c. gastrulation
d. organ formation
e. tissue specialization
You drive a nail into a tree that is 10 feet tall, and come back 10 years later. The tree is now 30 feet tall, but the nail is the same distance from the ground. This is because the tree grows up from
A. the apical meristem only. B. the lateral meristem only. C. both the lateral and apical meristems. D. the root tip. E. the node.