BIOLOGY HIGH SCHOOL

Dinosaurs emerged during what time period?

Answers

Answer 1
Answer: dinosaurs lived between 230 and 65 million years ago during that time it was called Mesozoic Era this was way before the first homo sapiens appeared there is 3 periods in the Mesozoic Era. Triassic, Jurassic, and Cretaceous 
Answer 2
Answer: The Mesozoic Era
hope it helps yo

Related Questions

Energy frequently changes form as it moves through biogeochemical cycles. Energy transfers in lightning fixation differ from those in photosynthesis because in lightning fixationradiant energy transforms into chemical energy; in photosynthesis, electrical energy transforms into chemical energy. electrical energy transforms into chemical energy; in photosynthesis, chemical energy transforms into electromagnetic energy. electrical energy transforms into chemical energy; in photosynthesis, radiant energy transforms into chemical energy. radiant energy transforms into chemical energy; in photosynthesis, chemical energy transforms into radiant energy.
What is the purpose of mimicry?a. It helps an animal evade predators. b. It allows an animal to fit in with a different species. c. It helps an animal to catch prey. d. All of the above
Which of these properties changes if the size of an object changes?a. densityb. melting pointc. solubilityd. mass
Which of the following cycles is crucial to living organisms? a. phosphorus b. water c. carbon d. all of the above
The fact that at least one species of resistant bacteria has developed for almost every antibiotic is evidence of which condition?A. The bacteria have adapted and could be evolving into a different species. B. The bacteria have learned to mimic other species. C. There is no variation in the bacteria population. D. The antibiotics are made differently.

What is the significance of an eyespot in the cell of euglena?

Answers

The main significance of an eyespot in the cell of euglena is the detection or sensing of light and then orienting the organism away from or towards the light. Euglena is basically a genus of a single celled flagellate. I hope that this is the answer you were looking for and it has come to your help.

Halogens are destructive to ozone because they are highly reactive with oxygen.

Answers

Answer:

True

Explanation:

On EDG2020

Answer:

true 100% sure

Explanation:

Which is an abiotic factor of a marine ecosystem

Answers

The water temperature, the speed of currents, the oxygen content, pollution, ect.
The factors that affect aquatic ecosystems is the rate of water flow, salinity, acidity, oxygen, light levels, depth, and temperature.

Brocas area?a. is usually found in the right hemisphere
b. corresponds to brodmanns area 8
c. is considered a motor speech area
d. lateral geniculate body

Answers

As for this, the most probable and the most likely answer would be C. is considered a motor speech area.

The Broca's Area is usually found in the left hemisphere, not on the right hemisphere. It corresponds to brodmanns areas 44 and brodmanns areas 45, not brodmanns area 8. Also, it isn't a lateral geniculate body. Since its discovery, there have been researches and studies made and experiments conducted to discover its purpose. In the evolution of our overall knowledge, it has been claimed that the Broca's Area is the motor center of speech.

What is the difference between heterozygous and homozygous individuals?

Answers

Ahomozygous individual will have one of the following genotypes, AA, BB, or OO. A heterozygous individual will have an AO, BO, or AB genotype

Final answer:

Heterozygous and homozygous individuals differ in the alleles for a specific trait, with heterozygous individuals having different alleles and homozygous individuals having the same alleles.

Explanation:

Heterozygous and homozygous individuals refer to the genetic makeup of an organism's alleles for a specific trait. In a heterozygous individual, the alleles for a particular trait are different, whereas in a homozygous individual, the alleles are the same. For example, if we consider the trait for eye color, a heterozygous individual could have one allele for brown eyes and one allele for blue eyes, while a homozygous individual could have two alleles for brown eyes or two alleles for blue eyes.

Learn more about Genetic variation here:

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PLEASE HELP!!!!!!!1) If you were lost at sea and you drank salty seawater, what would you expect to happen to the cells in your body?(shrink,swell,or stay same size )why do you think that?

2) A large-mouth bass is taken from a fresh water lake and transplanted into the river. If the conditions for survival are optimal, would you expect the cells in the fish to shrink,swell,or stay same size why do you think that?

3) If a sea star egg is taken from the ocean and put into Elk Lake would you expect the egg to shrink ,swell,or stay same size why do you think that?

Answers

1. The correct answer is; are body cells is going to shrink. Salty seawater is a hyperosmotic solution, meaning that it has more solutes than the cell inside. The water will move (from the cell) via osmosis in order for the solutions to reach equilibrium. Also, salty solution exerts more pressure on the of the cell, so the cell will shrink.

2. The correct answer cells in the fish will stay the same size. This will occur because both solutions, freshwater lake and river have similar (or equal) solute concentrations. Those solutions are called isosmotic. There is no movement of water or the solutes, so the cell stays the same.

3. The correct answer is to swell.This will happen because sea star egg has the same solute concentration as its first environment-ocean meaning that this solution is hyperosmotic comparing to the lake (ocean is saltier than the lake, it has more solutes). When you put the sea star egg in the lake, the water from the lake will move (via osmosis) into the egg, to reach equilibrium. Water will cause the cell to swell.
1) Our body cells would shrink because the excessive assumption of salt (from the salty seawater), would lead us to use and expel the clean/fresh water we already have out of our body (we'd urinate more as our kidneys would try hard to expel the salt, and we'd use more water than usual as our cells would try to dilute the salt); 

2) I would expect the cells in the fish to stay the same size as both waters have a similar environment and saline level;

3) I'd expect it to swell because the ocean is saltier than lakes; it would swell because it would absorb more water than it did its usual environment.
Other Questions
Science has shown that smoking causes cancer. Which is an example of howsociety responded to this information?OA. Cigarette smoking remains very common.OB. Cigarette smoking has become more common on television.OC. Warning labels are required on all packs of cigarettes.OD. Stores have continued to sell cigarettes.
Which of the following best describes the velocity of an object ? A.) 30m/s B.) 30m east C.) 30m/s east D.) 30m?s^2
The powerhouse of the cell: that is a term used to describe the ______________, because it's main function is to produce energy for cellular activities.
PLEASE HELP! What step of mitosis is illustrated in Diagram A of Figure 10-1? Explain what occurs during that step and how you know if this cell is a plant or animal cell.