BIOLOGY COLLEGE

PLEASEEE HELP! Which method involves using tools to control invasive species?

a. Mechanical
b. Chemical
c. Manual
d. Monitoring

Answers

Answer 1

Answer:

Answer:

A. Mechanical

Explanation:

Answer 2

Answer:

Answer:

sorry if i get this wrong d. Monitoring

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What is one disadvantage of insect stridulation

Answers

Answer:

Many insects stridulate when they are handled or attacked. It has been suggested that this disturbance stridulation acts to deter predators. This hypothesis was investigated in a series of experiments. Predators were given insects which had been silenced by disruption of their sound-producing mechanism or else had been sham operated but retained their normal ability to stridulate. 2. Three types of insects (mutillid wasps, Dasymutilla spp.; water scavenger beetles, Tropisternus spp.; and round sand beetles, Omophron labiatus) were given to wolf spiders (Lycosa ceratiola and Geolycosa ornatipes) at night in the field under natural conditions. When attacking silenced insects, spiders displayed greater persistence than when attacking phonic insects (Table 1). In addition, mortality was greater among silenced insects. 3. Spiders (L. ceratiola) were also given an artificial 'insect' - a vibrating probe whose vibration mimicked that of the cuticle of a stridulating insect. As with real insects, spiders persisted longer in their attack on the probe when it was silent than when it was 'stridulating.' 4. Female mutillid wasps were given to wild-caught mice (Peromyscus floridanus) in the laboratory. Unsilenced mutillids survived the encounter more often than their silenced counterparts. In another experiment, the stings of mutillid wasps were removed before testing. Mice killed nearly all these 'unprotected' mutillids. However, it took mice significantly longer to attack unsilenced mutillids and longer to kill them after initiating the assault (Table 2). 5. These results support the view that insect disturbance stridulation deters predators. Two modes of action by which these sounds may have their effect are discussed: they may serve to startle the attacker or they may alert it to the potential harmfulness of the insect and as such may qualify as an example of acoustic aposematism.

Pink eye is a recessive trait found in deer mice. In a cross between two individuals, both of whom are heterozygous for the pink eye mutation, the following offspring are obtained:Normal 18

Pink eye 2

Use the chi-square test to determine if the observed numbers of offspring fit the expected numbers of offspring from this cross. The value of is: ____________

Answers

Answer:

See the answer below

Explanation:

If pink eye is recessive, it means that the normal eye is the dominant trait. According to Mendelian law, the ratio of normal to pink eye in a cross involving two heterozygous mice should be 3:1.

Chi-square = $((O - E)^2)/(E)$ where O = observed frequency and E = expected frequency.

Phenotype Observed Expected Chi-square

Normal 18 3/4 x 20 = 15 $((18 - 15)^2)/(15)$ = 0.6

Pink 2 1/4 x 20 = 5 $((2 - 5)^2)/(5)$ = 1.8

Total Chi-square = 0.6 + 1.8 = 2.4

Degree of freedom = 2 - 1 = 1

Critical Chi-square value at 95% = 3.841

The critical Chi-square value is more than the calculated value. Hence, the observed number of offspring fits the expected number of offspring.

Which ingredient is a product of photosynthesis? Sugar, sunlight, carbon dioxide, or water?

Answers

Answer:

sugar

Explanation:

plant converts ATP to sugar

What happens to the solar energy that is not absorbed by earths surface?

Answers

Answer:

It is absorbed or reflected by clouds, gasses, and dust, or is reflected off of Earth's surface.

Explanation:

Final answer:

The solar energy that is not absorbed by Earth's surface is reflected back into space or absorbed by the atmosphere, contributing to the greenhouse effect.

Explanation:

The solar energy that is not absorbed by Earth's surface can be reflected, scattered, or absorbed by the atmosphere. Some of the solar energy is reflected back into space by clouds, particles in the atmosphere, and Earth's surface. This is known as albedo. The rest of the solar energy is absorbed by gases such as carbon dioxide and water vapor in the atmosphere.

This absorption of solar energy by the atmosphere contributes to the greenhouse effect, which helps to regulate Earth's temperature. The absorbed energy is re-emitted as heat, warming the lower layers of the atmosphere. This is why the Earth's surface is warmer than it would be without an atmosphere.

In summary, the solar energy that is not absorbed by Earth's surface is either reflected back into space or absorbed by the atmosphere, contributing to the greenhouse effect and warming the atmosphere.