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Rzqust [24]
3 years ago
12

how do you think earths large temperature gradient affects the speed of its convection currents how would this speed change if e

arths core was cooler
Biology
1 answer:
dezoksy [38]3 years ago
7 0
A higher temperature gradient causes faster heat transfer, and thus faster convection currents. If the core were cooler, the temperature gradient would be lower, so the convection currents would likely slow down.
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In scientific investigations, how does empirical evidence help scientists devise hypotheses?
nika2105 [10]

Answer:

Explanation:

An empirical evidence illustrates facts that are drawn from experimentation and observations. These are usually drawn from the way we see and percieve our environment using our senses.

A hypothesis is best and simply defined as a scientific guess. It is often a direct product of empirical studies of a particular problem. Most times when scientists gather facts and principles have been formulated, they try to explain their observation. This explanation is the hypothesis. The satement of the hypothesis is usually tentantive. Sometimes, we can have several hypothesis for a common source of empirical evidence.

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3 years ago
Two or more different atoms are combined in definite porportions in any
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2 or more different atoms are combined in definite proportions in any compound.
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How can two organisms with a dominant trait for a specific feature produce an organism with a recessive trait for the same featu
Liono4ka [1.6K]

Answer:

If the two organisms are heterozygous for the dominant trait.

Explanation:

For every trait, a diploid organism receives two forms of gene called ALLELE, from each parent. Allele is the variant form of a gene.

According to Mendel's law of dominance, for a particular trait, an allele is capable of masking the expression of another allele in a gene. The expressed allele is called the DOMINANT allele while the masked allele is called the RECESSIVE allele. Due to this, an organism can express a dominant trait even in a combined or heterozygous state i.e. different alleles.

When the two heterozygous organisms mate or are crossed, they undergo meiosis and their alleles are separated into GAMETES according to Mendel's law of segregation. For example; an organism with genotype (genetic make-up) Aa will produce gametes with A and a alleles.

Note that, a recessive trait can only be expressed in a homozygous state i.e. same allele. Hence, the two heterozygous organisms will produce gametes containing the recessive allele, which will likely combine to produce a recessive phenotype or trait.

8 0
3 years ago
What do the arrows in a food chain represent?
Molodets [167]
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astraxan [27]

Answer:

Explanation:

Parenchyma

1. They have thin cell wall.

2. Their cell wall is made up of cellulose.

3. They are unspecialized tissues.

4. The are found in soft part of the plant.

5. They undergo photosynthesis and can stored the food and also play important role in gaseous exchange.

6. There are spaces between the cells.

Collecchyma.

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2. Their cell walls are made up of cellulose and lectin.

3. They are specialized tissues

4. They are found in plants leaves and petioles.

5 The do not undergo photosynthesis but act to give mechanical support to plants.

6. They have little intercellular spaces.

Parenchyma and collecchyma are both tissues found in plants..

8 0
3 years ago
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