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laiz [17]
3 years ago
13

Sandy is 3 years older than twice Darren's age.

Biology
1 answer:
docker41 [41]3 years ago
6 0

How old is Darren? we need to know his age before we answer

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In 2004, scientists announced the discovery of the fossil remains of some extremely short early humans on the Indonesian island
Alex

Answer: The most accepted guess is: By bamboo rafts.

Explanation:

There are two hypotheses.

The first is that they arrived on Flores as Homo erectus and then evolved to Homo floresiensis. The second is that they were already Homo floresiensis when they arrived. This second one is the more accepted hypothesis because it would take organization and language to accomplish this technological water transportation feat. Homo erectus is not known to have developed speech.

Now at the time this transport was estimated to have happened, 100000 years ago, the islands of Komodo and Flores were joined and visible from the mainland. Together they constituted a 19km wide straight visible that could be easily seen from the mainland. The Homo floresiensis tribes built bamboo rafts, or possibly some other floating apparatus made if wood, and sailed there. The islands then progressively drifted apart, isolating them.

PS: It is important to note that some things may have drove them there such as famine, violence, etc.

8 0
3 years ago
Do both plant cells and prokaryotic cells have 70S ribosomes ​
NemiM [27]
OK SOMEONE ALREADY ANSWERED SO I NEED DA POINTS TYSM AND ALSO ANANDI34 IT’S I HOPE IT HELPS IT’S OK THO BUT AT LEAST YOU KNOW
5 0
3 years ago
1. Write a paragraph of 3-5 sentences to answer the following question. Your answer should demonstrate an understanding of the i
nignag [31]

Answer:

When you sit on a plane for 6 hours without moving, blood accumulates in your veins, and the moment you get up, gravitational forces affect venous return, cardiac output, blood pressure, and venous pressure. That way, when you're sitting on a plane, the gravitational force is the same at the upper and lower extremities, such as the chest, abdomen, and legs, causing venous blood pressure and volume to be evenly distributed throughout the body. However, when one gets up, one becomes dizzy because of abnormal regulation of blood pressure. This is because gravity causes blood to accumulate in the lower extremities (veins of the legs and trunk). This lowers the blood pressure and the blood that the heart pumps. By causing blood to accumulate in the lower extremities, and as venous compliance increases, the veins expand with blood that causes the volume of blood to shift in the veins. This increases the volume and venous pressure in the lower extremities when standing. And the volume of thoracic venous blood is less and less central venous pressure. This leads to a decline in stroke volume. Cardiac output and mean arterial pressure also decrease as left ventricular stroke volume decreases, reducing pulmonary venous return. Decreased standing blood pressure, referred to as orthostatic or postural hypotension. Thus, lowering blood pressure decreases cerebral blood flow, which means less range of blood in the brain causing dizziness.

Explanation:

6 0
3 years ago
Car wax mostly contains beeswax and carnauba wax. Which of these does NOT accurately describe waxes?
alex41 [277]

Answer:

Waxes does't contain fatty acids,glycerol and a phosphate group.

Explanation:

Car wax and bee wax contain ester bonds, fatty acids and long chain hydrocarbons but they don't possess fatty acid, glycerol,and a phosphate group.

8 0
3 years ago
In what ways do the properties of water affect life on earth??​
nexus9112 [7]

Answer:

Drinking will be unavalible

Explanation:

5 0
4 years ago
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