How did fossils help study life

1 answer:

7 0

Answer: By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.

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Which of the following is the best definition of a saturated fatty acid?

Oksi-84 [34.3K]

The best choice would be C.

A saturated fatty acid is a basic unit of lipid that consists of only single carbon to carbon bonds.

Saturated fatty acids have been “saturated” with hydrogen ions and only have single carbon to carbon bonds, unlike unsaturated fatty acids that have both single and double bonds and have kinks and aren’t straight.

Saturated fatty acids are solid in room temperature(animal fats) and unsaturated fatty acids are liquid in room temperature(oils/plant fats).

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What is technology? TEN POINTS!

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Your answer would be C!

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Eleanor is testing how temperature affects the hatching of chicken eggs. She has three groups of eggs, one each at 25°C (77°F),

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It's then independent variable.

This is the case because Eleanor is making these temperature changes.

Extra info.

The dependen variable would then be the result of hatching. This is the case because it depends on the different temperature to see what the effect of temperature change is affecting the time of hatching

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3 years ago

Leeuwenhoek's microscopes had a resolution (resolving power) of 1 micrometer. this means that __________.

Romashka-Z-Leto [24]

The microscope could distinguish objects that were more than 1 micrometer apart

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4 years ago

Stickleback fish exhibit variation in a morphological trait known as gill rakers. Fish with long gill rakers are very good at ea

Scorpion4ik [409]

Answer:

c, disruptive selection

Explanation:

Disruptive selection is a term used to describe population genetic changes that simultaneously favor individuals at both ends of the distribution. When disruptive selection operates, individuals at the extremes contribute more offspring than those with intermediate characteristics, producing two peaks in the distribution on a graph.

In the excerpt shown in the question, long-gill-striped and gill-striped fish were favored by the selection process than intermediate-length striped fish. For this reason we can conclude that a disruptive selection was taking place.

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