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
Montano1993 [528]
4 years ago
13

Which astronomer spent 20 years plotting the positions of the planets?

Chemistry
1 answer:
devlian [24]4 years ago
3 0

Answer:

Tycho Brahe

Explanation:

Tycho Brahe spent 20 years in plotting the positions of the planets. He was among a group of astronomers who helped developing heliocentric model of the universe.

You might be interested in
As the temperature of a solution increases,what happens to its molarity? Explain
HACTEHA [7]
Hey :)

molarity<span> is affected by </span>temperature<span> because morality is simply a measure on the volume of a particular </span>solution<span>, and the volume of a substance will be negatively or positively affected by changes in </span>temperature. In theory, volume will increase<span> when </span>temperature increases<span>, a reciprocal effect of </span><span>molarity</span>
3 0
3 years ago
On may 10th it's gonna be my birthday and my mum don't know what to get me what do u think i would like my bio: creative,artisti
pickupchik [31]

Answer:

It’s past your b day... sorry

Explanation:

8 0
3 years ago
8. Cancer cells produce their own ________ hormones that trick the body into feeding cancer cells rather than healthy cells. fat
Klio2033 [76]
<span> Melatonin is a powerful antioxidant and free radical scavenger that helps 'cool down' excess inflammation. In fact, melatonin is so integral to the health of your immune system that a lack of it causes your thymus gland, a key component of your immune system, to shrink in size.1 Because melatonin is a strong antioxidant and is able to cross the blood-brain barrier, it is thought to help protect against Alzheimer's disease as well as brain aging.

In one study, artificially aged mice treated with melatonin had reduced oxidative stress and markers of cerebral aging and neurodegeneration, indicating the melatonin offered both neuroprotective and anti-aging effects.2 In another study, researchers revealed that combining daily exercise with the daily intake of melatonin appeared to have a synergistic effect against brain deterioration in mice with Alzheimer's disease-associated mutations.3 Improvements in behavior, learning and memory were noted. Melatonin's immediate precursor is the neurotransmitter serotonin, which is a major player in regulating and giving a lift to your mood. And, like serotonin, melatonin plays important roles in your physical and mental health. Studies have shown that insufficient melatonin production can set you up for:</span>
7 0
3 years ago
4. Positive electric charges are always attracted to-____ charges.
kvv77 [185]

Answer: Negatively

Explanation:

7 0
2 years ago
Read 2 more answers
How many elements are identified in tearms of their atoms
lianna [129]
<span>their identified by the number of protons they have in the nucleus which = their electrons. </span>
6 0
4 years ago
Other questions:
  • Which substance below will exhibit hydrogen bonding between the molecules of the substance?
    13·1 answer
  • Examine the assumption. Assumption: The Earth is flat. Which statements accurately describe how the assumption affects scientifi
    13·2 answers
  • A 100.0 mL solution containing 0.923 gof maleic acid (MW=116.072 g/mol) is titrated with 0.265 M KOH. Calculate the pH of the so
    6·1 answer
  • Sodium chloride (NaCl) is the chemical name for table salt and potassium chloride (KCl) is a common salt substitute. Using the p
    11·1 answer
  • I will mark brainliest!
    9·1 answer
  • the above shows immovable changer at 298 K with a pressure rod 450 kPa. if the temperature rises to 377 K, what is the new press
    5·1 answer
  • it is common to get different volume reading for each container.What explaination can you offer for an apparent decrease and inc
    5·1 answer
  • Weigh out enough LB Agar to make 250 mL of agar solution and add to beaker.
    12·1 answer
  • What can u say about the sizes of all the atoms in a piece of carbon​
    10·1 answer
  • A gas has a volume of 27. 5 L at 302 k and 1. 40 atm. How many moles are in the sample of gas?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!