1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
umka21 [38]
3 years ago
14

Describe the evolution of modern whales and dolphins using the fossil evidence

Biology
1 answer:
HACTEHA [7]3 years ago
4 0
Whales are related back to a hairy, 4-legged land mammal that eventually led to the formation of flippers without phalanges, a blow hole that became more dorsal, and other defining features. All of this has been backed by fossil evidence, especially that found within a certain desert region (can’t remember the name) that has a vast amount of whale fossils from many different time periods
You might be interested in
A type of ____ reproduction in which one cell splits into two identical ones; the same as division in ____ cells
choli [55]

Answer: binary fission

I think.... Well what are the answer choices? Is this one of them?

8 0
2 years ago
Read 2 more answers
A control variable is any element of an experiment that: is changed on purpose changes as a result of an action taken by the sci
qwelly [4]

is held constant throughout the experiment.

the control group is used as a foundation for your experiment so you know what changes what and how to manipulate the independent variable.

3 0
3 years ago
Read 2 more answers
Neurotransmitters Select one: a. stimulate presynaptic terminals. b. remain in the synaptic cleft for long periods of time. c. b
Nonamiya [84]

Details about Neurotransmitters are described below.

Explanation:

1.Neurotransmitters are referred to as the body’s chemical messengers. They are the molecules used by the nervous system to transmit messages between neurons, or from neurons to muscles.

2.Terms in this set

  • acetylcholine. A neurotransmitter used by neurons in the PNS and CNS in the control of functions ranging from muscle contraction and heart rate to digestion and memory.
  • norepinephrine.
  • serotonin.
  • dopamine.
  • GABA.
  • glutamate.
  • endorphin.

3.Neurotransmitters are made of the following :

  • The amino acid neurotransmitters glutamate, GABA (γ-aminobutyric acid), and glycine. All of these are amino acids, though GABA is not an amino acid that's found in proteins. ...
  • The biogenic amines dopamine, norepinephrine, epinephrine, serotonin, and histamine, which are made from amino acid precursors.

4.Neurotransmitters can impact a specific area of the brain, including behavior or mood, their malfunctions can cause effects ranging from mood swings to aggression and anxiety. ... Understanding the way neurotransmitters function in the brain could lead to better treatments for mental disorders.

3 0
3 years ago
Air pollution in US National Parks is effecting the environment in what way(s)? a. Plant damage from ozone exposure b. High leve
Fofino [41]

Answer:

a

Explanation:

cuz pick the ask because I felt like it was a good answer

6 0
2 years ago
In translation What are are the three letters called in mRNA and what are they connected to ??
Ray Of Light [21]

Answer:

During translation, the ribosome reads 3 letters at a time on the mRNA strand called a codon. The anticodons, which are connected to the amino acid, match up with the letters on the mRNA strand  

Explanation:

6 0
2 years ago
Other questions:
  • In the inheritance pattern ______ ,
    14·1 answer
  • Is the earth heated by incoming solar radiation or from the earth’s surface yes or no
    8·2 answers
  • What is formed when atoms of elements combine?
    12·2 answers
  • How does material move from the respiratory system to the circulatory
    7·1 answer
  • Which process releases oxygen?
    8·2 answers
  • Can you rearange it please​
    10·2 answers
  • PLEASE HELPP!! An embryo is found in a plant's<br> seed<br> roots<br> stem<br> flower
    13·1 answer
  • Question 16 What type of mutation has occurred in the following example? Original DNA Sequence TIC G|GICIT AGGICA Mutated DNA Se
    15·1 answer
  • What type of reaction removed the phosphate group from the ATP molecule
    7·1 answer
  • HUMAN EGGS AND SPERM EACH CONTAIN 23 _____, WHICH ARE COMPOSED OF LONG STRANDS OF _________.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!